Muñoz-Fernandez, Lidia

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orcid::0000-0003-3124-1854
  • Muñoz-Fernandez, Lidia (9)
  • Muñoz, Lidia (3)

Author's Bibliography

Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO

Muñoz-Fernandez, Lidia; Gómez-Villalba, Luz Stella; Milošević, Olivera; Rabanal, Maria Eugenia

(2022)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Gómez-Villalba, Luz Stella
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13517
AB  - This study presents the advances in the field of ZnO/Ag catalysts from the synthesis of hierarchical ZnO nanowires (NWs) decorated with Ag nanoparticles, prepared by a facile solvothermal method at 120°C. It evaluates the photocatalytic efficiency from studying the time reaction of Ag/Zn concentration ratio and the presence of cetyltrimethylammonium bromide (CTAB) as an organic dispersant. X-ray diffraction, scanning electron microscopy, and analytical/high-resolution transmission electron microscopy results confirmed the presence of homogeneous cylindrical ZnO nanowires and quasi-spherical Ag crystals. ZnO NWs exhibited hexagonal wurtzite structure and cubic FCC symmetry in Ag nanoparticles (NPS). Two types of nanostructures, including homogeneous cylindrical ZnO NWs in the absence of Ag and simultaneous presence of ZnO NWs and Ag NPs, formed depending on experimental conditions. The photocatalytic activity was evaluated by studying methylene blue (MB) degradation time under UV light excitation. Diffuse reflectance UV–Vis spectrophotometry (UV–Vis DRS) allowed identifying the ZnO absorption band at ~393 nm. Crystal size varied depending on the reaction time and the addition of CTAB. Synthesis time increased bandgap values, getting better photocatalytic performance in samples synthesized in intermediate times (6 h), higher Ag+/Zn2+ molar ratio (0.2/1.0), and CTAB. According to HRTEM observations, the presence of silver nanocrystals with high content of defects (twinning, stacking faults) could play an essential role in the photocatalytic response. In this context, the specific synthesis conditions of Ag/ZnO might be more appropriate for their use in organic dyes degradation in water and the potential use in protective treatments against materials biodeterioration processes. © 2022 The Authors
T2  - Materials Characterization
T1  - Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO
VL  - 185
DO  - 10.1016/j.matchar.2021.111718
UR  - https://hdl.handle.net/21.15107/rcub_dais_13517
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Gómez-Villalba, Luz Stella and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2022",
abstract = "This study presents the advances in the field of ZnO/Ag catalysts from the synthesis of hierarchical ZnO nanowires (NWs) decorated with Ag nanoparticles, prepared by a facile solvothermal method at 120°C. It evaluates the photocatalytic efficiency from studying the time reaction of Ag/Zn concentration ratio and the presence of cetyltrimethylammonium bromide (CTAB) as an organic dispersant. X-ray diffraction, scanning electron microscopy, and analytical/high-resolution transmission electron microscopy results confirmed the presence of homogeneous cylindrical ZnO nanowires and quasi-spherical Ag crystals. ZnO NWs exhibited hexagonal wurtzite structure and cubic FCC symmetry in Ag nanoparticles (NPS). Two types of nanostructures, including homogeneous cylindrical ZnO NWs in the absence of Ag and simultaneous presence of ZnO NWs and Ag NPs, formed depending on experimental conditions. The photocatalytic activity was evaluated by studying methylene blue (MB) degradation time under UV light excitation. Diffuse reflectance UV–Vis spectrophotometry (UV–Vis DRS) allowed identifying the ZnO absorption band at ~393 nm. Crystal size varied depending on the reaction time and the addition of CTAB. Synthesis time increased bandgap values, getting better photocatalytic performance in samples synthesized in intermediate times (6 h), higher Ag+/Zn2+ molar ratio (0.2/1.0), and CTAB. According to HRTEM observations, the presence of silver nanocrystals with high content of defects (twinning, stacking faults) could play an essential role in the photocatalytic response. In this context, the specific synthesis conditions of Ag/ZnO might be more appropriate for their use in organic dyes degradation in water and the potential use in protective treatments against materials biodeterioration processes. © 2022 The Authors",
journal = "Materials Characterization",
title = "Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO",
volume = "185",
doi = "10.1016/j.matchar.2021.111718",
url = "https://hdl.handle.net/21.15107/rcub_dais_13517"
}
Muñoz-Fernandez, L., Gómez-Villalba, L. S., Milošević, O.,& Rabanal, M. E.. (2022). Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO. in Materials Characterization, 185.
https://doi.org/10.1016/j.matchar.2021.111718
https://hdl.handle.net/21.15107/rcub_dais_13517
Muñoz-Fernandez L, Gómez-Villalba LS, Milošević O, Rabanal ME. Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO. in Materials Characterization. 2022;185.
doi:10.1016/j.matchar.2021.111718
https://hdl.handle.net/21.15107/rcub_dais_13517 .
Muñoz-Fernandez, Lidia, Gómez-Villalba, Luz Stella, Milošević, Olivera, Rabanal, Maria Eugenia, "Influence of nanoscale defects on the improvement of photocatalytic activity of Ag/ZnO" in Materials Characterization, 185 (2022),
https://doi.org/10.1016/j.matchar.2021.111718 .,
https://hdl.handle.net/21.15107/rcub_dais_13517 .
1
13
14

Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)

Muñoz-Fernandez, Lidia; Alkan, Gözde; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, Bernd

(Elsevier, 2019)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, Gözde
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, Bernd
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4591
AB  - Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.
PB  - Elsevier
T2  - Catalysis Today
T1  - Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)
SP  - 26
EP  - 33
VL  - 321-322
DO  - 10.1016/j.cattod.2017.11.029
UR  - https://hdl.handle.net/21.15107/rcub_dais_4591
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Alkan, Gözde and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, Bernd",
year = "2019",
abstract = "Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)",
pages = "26-33",
volume = "321-322",
doi = "10.1016/j.cattod.2017.11.029",
url = "https://hdl.handle.net/21.15107/rcub_dais_4591"
}
Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M. E.,& Friedrich, B.. (2019). Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today
Elsevier., 321-322, 26-33.
https://doi.org/10.1016/j.cattod.2017.11.029
https://hdl.handle.net/21.15107/rcub_dais_4591
Muñoz-Fernandez L, Alkan G, Milošević O, Rabanal ME, Friedrich B. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today. 2019;321-322:26-33.
doi:10.1016/j.cattod.2017.11.029
https://hdl.handle.net/21.15107/rcub_dais_4591 .
Muñoz-Fernandez, Lidia, Alkan, Gözde, Milošević, Olivera, Rabanal, Maria Eugenia, Friedrich, Bernd, "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)" in Catalysis Today, 321-322 (2019):26-33,
https://doi.org/10.1016/j.cattod.2017.11.029 .,
https://hdl.handle.net/21.15107/rcub_dais_4591 .
20
13
19

Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)

Muñoz-Fernandez, Lidia; Alkan, Gözde; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, Bernd

(Elsevier, 2019)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, Gözde
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, Bernd
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4602
AB  - Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.
PB  - Elsevier
T2  - Catalysis Today
T1  - Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)
SP  - 26
EP  - 33
VL  - 321-322
DO  - 10.1016/j.cattod.2017.11.029
UR  - https://hdl.handle.net/21.15107/rcub_dais_4602
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Alkan, Gözde and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, Bernd",
year = "2019",
abstract = "Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)",
pages = "26-33",
volume = "321-322",
doi = "10.1016/j.cattod.2017.11.029",
url = "https://hdl.handle.net/21.15107/rcub_dais_4602"
}
Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M. E.,& Friedrich, B.. (2019). Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today
Elsevier., 321-322, 26-33.
https://doi.org/10.1016/j.cattod.2017.11.029
https://hdl.handle.net/21.15107/rcub_dais_4602
Muñoz-Fernandez L, Alkan G, Milošević O, Rabanal ME, Friedrich B. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today. 2019;321-322:26-33.
doi:10.1016/j.cattod.2017.11.029
https://hdl.handle.net/21.15107/rcub_dais_4602 .
Muñoz-Fernandez, Lidia, Alkan, Gözde, Milošević, Olivera, Rabanal, Maria Eugenia, Friedrich, Bernd, "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)" in Catalysis Today, 321-322 (2019):26-33,
https://doi.org/10.1016/j.cattod.2017.11.029 .,
https://hdl.handle.net/21.15107/rcub_dais_4602 .
20
13
19

Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029

Muñoz-Fernandez, Lidia; Alkan, Gözde; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, Bernd

(Elsevier, 2019)

TY  - DATA
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, Gözde
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, Bernd
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5973
AB  - Figure S1: Schematic shown of modified two-step USP equipment (2 steps); Figure S2. The growth mechanism of Ag/ZnO nanocomposite systems synthesised by USP in single and two steps; Figure S3. Enlarged figures 4.c and 4.d (photocatalytic activity of Ag/ZnO systems by % elimination of methylene blue (MB) solution under UV irradiation); Table S1. Synthesis conditions of Ag/ZnO systems obtained by USP at 800 °C; Table S2. Synthesised sample crystallite sizes, particle sizes, gap values, BET surface areas and photocatalytic activity; Table S3. Synthesised samples elemental composition (weight %)
PB  - Elsevier
T2  - Catalysis Today
T1  - Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029
UR  - https://hdl.handle.net/21.15107/rcub_dais_5973
ER  - 
@misc{
author = "Muñoz-Fernandez, Lidia and Alkan, Gözde and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, Bernd",
year = "2019",
abstract = "Figure S1: Schematic shown of modified two-step USP equipment (2 steps); Figure S2. The growth mechanism of Ag/ZnO nanocomposite systems synthesised by USP in single and two steps; Figure S3. Enlarged figures 4.c and 4.d (photocatalytic activity of Ag/ZnO systems by % elimination of methylene blue (MB) solution under UV irradiation); Table S1. Synthesis conditions of Ag/ZnO systems obtained by USP at 800 °C; Table S2. Synthesised sample crystallite sizes, particle sizes, gap values, BET surface areas and photocatalytic activity; Table S3. Synthesised samples elemental composition (weight %)",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029",
url = "https://hdl.handle.net/21.15107/rcub_dais_5973"
}
Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M. E.,& Friedrich, B.. (2019). Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029. in Catalysis Today
Elsevier..
https://hdl.handle.net/21.15107/rcub_dais_5973
Muñoz-Fernandez L, Alkan G, Milošević O, Rabanal ME, Friedrich B. Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029. in Catalysis Today. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5973 .
Muñoz-Fernandez, Lidia, Alkan, Gözde, Milošević, Olivera, Rabanal, Maria Eugenia, Friedrich, Bernd, "Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029" in Catalysis Today (2019),
https://hdl.handle.net/21.15107/rcub_dais_5973 .

Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn)

Gonzalez, L.; Muñoz-Fernandez, Lidia; Flores-Carrasco, Gregorio; Milošević, Olivera; Salas, G.; Rabanal, Maria Eugenia

(ICCCI, 2018)

TY  - CONF
AU  - Gonzalez, L.
AU  - Muñoz-Fernandez, Lidia
AU  - Flores-Carrasco, Gregorio
AU  - Milošević, Olivera
AU  - Salas, G.
AU  - Rabanal, Maria Eugenia
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4678
AB  - The synthesis of y-Fe203&ZnO hybrid nanocomposites has been carried out by a solvothermal process at low temperature evaluating the influence of different experimental parameters and conditions. Several techniques such as X-Ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (HR-TEM), Vibrating Sample Magnetometry (VSM), Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), Dynamic Light Dispersion (DLS), Thermogravimetric Analysis (TGA) and UV-Vis Spectroscopy have been used to characterize the size, shape, structure, chemical composition, purity, crystalline phase and spectroscopic, magnetic, and finally the photocatalytic properties of nanocomposites prepared. Based on the results obtained, under irradiation ofUV-Vis light, the nanocomposites of y-Fe203-ZnO synthesised both at 6 hand 12 hat 120°C demonstrate a high photocatalytic activity (PCA) compared to pure y-Fe203 and ZnO samples for the degradation of methylene blue (MB), used as a cationic dye model. The percentage of degradation obtained for both cases was much higher than that obtained for the pure compounds of y-Fe203 and ZnO (85% and 81% vs 51% and 46%, respectively). Also, the study of stability, magnetic recovery and recyclability in MB dye degradation was carried out. For this purpose, photocatalytic tests were performed by reusing these hybrid nanocomposites during successive cycles. It has been verified that the PCA of these nanocomposites is maintained after several cicles of experiments with new MB solutions demonstrating their high photocatalytic stability. In conclusion, y-Fe203-ZnO hybrid nanostructures are a suitable candidate for its use in environmental applications, and to solve problems of removal of organic contaminants in the wastewater treatments as a magnetically recoverable photocatalyst.
PB  - ICCCI
C3  - ICCCI2018 : The 6th International Conference on the Characterization and Control ofInterfacesfor High Quality AdvancedMaterials andthe 54th Summer Symposium on Powder Technology, Kurashiki, Japan, July 9-12, 2018 : Program and Abstracts
T1  - Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn)
SP  - 123
EP  - 123
UR  - https://hdl.handle.net/21.15107/rcub_dais_4678
ER  - 
@conference{
author = "Gonzalez, L. and Muñoz-Fernandez, Lidia and Flores-Carrasco, Gregorio and Milošević, Olivera and Salas, G. and Rabanal, Maria Eugenia",
year = "2018",
abstract = "The synthesis of y-Fe203&ZnO hybrid nanocomposites has been carried out by a solvothermal process at low temperature evaluating the influence of different experimental parameters and conditions. Several techniques such as X-Ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (HR-TEM), Vibrating Sample Magnetometry (VSM), Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), Dynamic Light Dispersion (DLS), Thermogravimetric Analysis (TGA) and UV-Vis Spectroscopy have been used to characterize the size, shape, structure, chemical composition, purity, crystalline phase and spectroscopic, magnetic, and finally the photocatalytic properties of nanocomposites prepared. Based on the results obtained, under irradiation ofUV-Vis light, the nanocomposites of y-Fe203-ZnO synthesised both at 6 hand 12 hat 120°C demonstrate a high photocatalytic activity (PCA) compared to pure y-Fe203 and ZnO samples for the degradation of methylene blue (MB), used as a cationic dye model. The percentage of degradation obtained for both cases was much higher than that obtained for the pure compounds of y-Fe203 and ZnO (85% and 81% vs 51% and 46%, respectively). Also, the study of stability, magnetic recovery and recyclability in MB dye degradation was carried out. For this purpose, photocatalytic tests were performed by reusing these hybrid nanocomposites during successive cycles. It has been verified that the PCA of these nanocomposites is maintained after several cicles of experiments with new MB solutions demonstrating their high photocatalytic stability. In conclusion, y-Fe203-ZnO hybrid nanostructures are a suitable candidate for its use in environmental applications, and to solve problems of removal of organic contaminants in the wastewater treatments as a magnetically recoverable photocatalyst.",
publisher = "ICCCI",
journal = "ICCCI2018 : The 6th International Conference on the Characterization and Control ofInterfacesfor High Quality AdvancedMaterials andthe 54th Summer Symposium on Powder Technology, Kurashiki, Japan, July 9-12, 2018 : Program and Abstracts",
title = "Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn)",
pages = "123-123",
url = "https://hdl.handle.net/21.15107/rcub_dais_4678"
}
Gonzalez, L., Muñoz-Fernandez, L., Flores-Carrasco, G., Milošević, O., Salas, G.,& Rabanal, M. E.. (2018). Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn). in ICCCI2018 : The 6th International Conference on the Characterization and Control ofInterfacesfor High Quality AdvancedMaterials andthe 54th Summer Symposium on Powder Technology, Kurashiki, Japan, July 9-12, 2018 : Program and Abstracts
ICCCI., 123-123.
https://hdl.handle.net/21.15107/rcub_dais_4678
Gonzalez L, Muñoz-Fernandez L, Flores-Carrasco G, Milošević O, Salas G, Rabanal ME. Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn). in ICCCI2018 : The 6th International Conference on the Characterization and Control ofInterfacesfor High Quality AdvancedMaterials andthe 54th Summer Symposium on Powder Technology, Kurashiki, Japan, July 9-12, 2018 : Program and Abstracts. 2018;:123-123.
https://hdl.handle.net/21.15107/rcub_dais_4678 .
Gonzalez, L., Muñoz-Fernandez, Lidia, Flores-Carrasco, Gregorio, Milošević, Olivera, Salas, G., Rabanal, Maria Eugenia, "Magnetically recoverable photocatalysts based on metal oxide nanostructures (Fe and Zn)" in ICCCI2018 : The 6th International Conference on the Characterization and Control ofInterfacesfor High Quality AdvancedMaterials andthe 54th Summer Symposium on Powder Technology, Kurashiki, Japan, July 9-12, 2018 : Program and Abstracts (2018):123-123,
https://hdl.handle.net/21.15107/rcub_dais_4678 .

Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications

Muñoz-Fernandez, Lidia; Sierra-Fernández, Aránzazu; Flores-Carrasco, Gregorio; Milošević, Olivera; Rabanal, Maria Eugenia

(Elsevier, 2017)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Sierra-Fernández, Aránzazu
AU  - Flores-Carrasco, Gregorio
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2378
AB  - Micro/nanostructured systems based on metallic oxide (ZnO) with noble metal (Ag) on the surface (Ag/ZnO) are synthesized by solvothermal method from zinc nitrate hexahydrate (Zn(NO3)2·6H2O), zinc acetate dehydrate (Zn(CH3COO)2·2H2O), zinc acetylacetonate hydrate (Zn(C5H7O2)2·xH2O) and silver nitrate (Ag(NO3)) as precursors. In these systems, polyvinylpyrrolidone (PVP) is used as surfactant for controlling particle morphology, size and dispersion. The obtained materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), UV–vis diffuse reflectance spectroscopy (DRS), N2 gas adsorption–desorption (BET) and Raman spectroscopy (RS). By XRD results, all major peaks are indexed to the hexagonal wurtzite-type structure of the ZnO and samples with noble metal, extra diffraction peaks are detected which correspond to the face-centered-cubic (fcc) structure of the metallic Ag. Depending on used precursor, different morphologies have been obtained. Mainly, ZnO prims-like rods – NRs (with 0.8 ⩽ aspect ratio ⩾ 3.4) – have been observed. Quasi-spherical particles of metallic Ag (with diameters between 558 ± 111 μm and 22 ± 1 nm) have been detected on the ZnO surface. Photocatalytic results (all samples studied >30% MB degradation) verify the important effect of surfactant and the viability of synthesized Ag/ZnO micro/nanocomposites for environmental applications.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications
SP  - 83
EP  - 92
VL  - 28
IS  - 1
DO  - 10.1016/j.apt.2016.09.033
UR  - https://hdl.handle.net/21.15107/rcub_dais_2378
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Sierra-Fernández, Aránzazu and Flores-Carrasco, Gregorio and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2017",
abstract = "Micro/nanostructured systems based on metallic oxide (ZnO) with noble metal (Ag) on the surface (Ag/ZnO) are synthesized by solvothermal method from zinc nitrate hexahydrate (Zn(NO3)2·6H2O), zinc acetate dehydrate (Zn(CH3COO)2·2H2O), zinc acetylacetonate hydrate (Zn(C5H7O2)2·xH2O) and silver nitrate (Ag(NO3)) as precursors. In these systems, polyvinylpyrrolidone (PVP) is used as surfactant for controlling particle morphology, size and dispersion. The obtained materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), UV–vis diffuse reflectance spectroscopy (DRS), N2 gas adsorption–desorption (BET) and Raman spectroscopy (RS). By XRD results, all major peaks are indexed to the hexagonal wurtzite-type structure of the ZnO and samples with noble metal, extra diffraction peaks are detected which correspond to the face-centered-cubic (fcc) structure of the metallic Ag. Depending on used precursor, different morphologies have been obtained. Mainly, ZnO prims-like rods – NRs (with 0.8 ⩽ aspect ratio ⩾ 3.4) – have been observed. Quasi-spherical particles of metallic Ag (with diameters between 558 ± 111 μm and 22 ± 1 nm) have been detected on the ZnO surface. Photocatalytic results (all samples studied >30% MB degradation) verify the important effect of surfactant and the viability of synthesized Ag/ZnO micro/nanocomposites for environmental applications.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications",
pages = "83-92",
volume = "28",
number = "1",
doi = "10.1016/j.apt.2016.09.033",
url = "https://hdl.handle.net/21.15107/rcub_dais_2378"
}
Muñoz-Fernandez, L., Sierra-Fernández, A., Flores-Carrasco, G., Milošević, O.,& Rabanal, M. E.. (2017). Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications. in Advanced Powder Technology
Elsevier., 28(1), 83-92.
https://doi.org/10.1016/j.apt.2016.09.033
https://hdl.handle.net/21.15107/rcub_dais_2378
Muñoz-Fernandez L, Sierra-Fernández A, Flores-Carrasco G, Milošević O, Rabanal ME. Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications. in Advanced Powder Technology. 2017;28(1):83-92.
doi:10.1016/j.apt.2016.09.033
https://hdl.handle.net/21.15107/rcub_dais_2378 .
Muñoz-Fernandez, Lidia, Sierra-Fernández, Aránzazu, Flores-Carrasco, Gregorio, Milošević, Olivera, Rabanal, Maria Eugenia, "Solvothermal synthesis of Ag/ZnO micro/nanostructures with different precursors for advanced photocatalytic applications" in Advanced Powder Technology, 28, no. 1 (2017):83-92,
https://doi.org/10.1016/j.apt.2016.09.033 .,
https://hdl.handle.net/21.15107/rcub_dais_2378 .
2
26
14
26

Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP

Muñoz-Fernandez, Lidia; Alkan, G.; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, B.

(Belgrade : Serbian Ceramic Society, 2017)

TY  - CONF
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, G.
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, B.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/4775
AB  - Synthesis of ZnO:Ag core-shell nanoparticles were performed by ultrasonic spray pyrolysis (USP) from the corresponding nitrate solutions. Varying relative concentrations of Ag and ZnO precursors and two different equipment installation, allowing either common (single-step) or separate precipitation (two-steps) of Ag and ZnO, were examined in terms of their effect on final microstructure and photocatalytic properties using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM, TEM, HRTEM), UV-Vis spectroscopy and photocatalytic tests. Formation of phase-pure ZnO:Ag core- shell like particles where ZnO secondary submicron sized particles formed by primary crystals with the size of 5-20 nm were confirmed by TEM analyses. Structural analyses revealed variations in silver distribution and morphology within ZnO core depending on experimental conditions. Samples with fine and uniform silver distribution on ZnO surface display a strong silver-induced enhancement of photocatalytic performance and exhibits a significantly improved photocatalytic activity in the degradation of methyl blue (MB) than that of other noble metal free ZnO systems. Photocatalytic analyses (all samples reached > 45% MB degradation) confirm the all synthesized ZnO:Ag USP systems viability for environmental applications. The best result (93% of dye elimination) is obtained for sample exhibiting maximum available surface, which strongly depends on particle morphology, size and distribution. Moreover, all samples synthesized by single-step USP revealed higher dye elimination with respect to ones with two- steps USP due to favored distribution of silver in microstructure.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VI: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 18-20, 2017
T1  - Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP
SP  - 58
EP  - 58
UR  - https://hdl.handle.net/21.15107/rcub_dais_4775
ER  - 
@conference{
author = "Muñoz-Fernandez, Lidia and Alkan, G. and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, B.",
year = "2017",
abstract = "Synthesis of ZnO:Ag core-shell nanoparticles were performed by ultrasonic spray pyrolysis (USP) from the corresponding nitrate solutions. Varying relative concentrations of Ag and ZnO precursors and two different equipment installation, allowing either common (single-step) or separate precipitation (two-steps) of Ag and ZnO, were examined in terms of their effect on final microstructure and photocatalytic properties using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM, TEM, HRTEM), UV-Vis spectroscopy and photocatalytic tests. Formation of phase-pure ZnO:Ag core- shell like particles where ZnO secondary submicron sized particles formed by primary crystals with the size of 5-20 nm were confirmed by TEM analyses. Structural analyses revealed variations in silver distribution and morphology within ZnO core depending on experimental conditions. Samples with fine and uniform silver distribution on ZnO surface display a strong silver-induced enhancement of photocatalytic performance and exhibits a significantly improved photocatalytic activity in the degradation of methyl blue (MB) than that of other noble metal free ZnO systems. Photocatalytic analyses (all samples reached > 45% MB degradation) confirm the all synthesized ZnO:Ag USP systems viability for environmental applications. The best result (93% of dye elimination) is obtained for sample exhibiting maximum available surface, which strongly depends on particle morphology, size and distribution. Moreover, all samples synthesized by single-step USP revealed higher dye elimination with respect to ones with two- steps USP due to favored distribution of silver in microstructure.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VI: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 18-20, 2017",
title = "Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP",
pages = "58-58",
url = "https://hdl.handle.net/21.15107/rcub_dais_4775"
}
Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M. E.,& Friedrich, B.. (2017). Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP. in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VI: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 18-20, 2017
Belgrade : Serbian Ceramic Society., 58-58.
https://hdl.handle.net/21.15107/rcub_dais_4775
Muñoz-Fernandez L, Alkan G, Milošević O, Rabanal ME, Friedrich B. Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP. in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VI: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 18-20, 2017. 2017;:58-58.
https://hdl.handle.net/21.15107/rcub_dais_4775 .
Muñoz-Fernandez, Lidia, Alkan, G., Milošević, Olivera, Rabanal, Maria Eugenia, Friedrich, B., "Synthesis of ZnO:Ag core-shell nanoparticles with enhanced photocatalytic properties by single - and two-steps USP" in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VI: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 18-20, 2017 (2017):58-58,
https://hdl.handle.net/21.15107/rcub_dais_4775 .

Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature

Flores-Carrasco, Gregorio; Muñoz-Fernandez, Lidia; Alcántara-Iniesta, Salvador; Soto-Cruz, Blanca Susana; Milošević, Olivera; Rabanal, Maria Eugenia

(2017)

TY  - JOUR
AU  - Flores-Carrasco, Gregorio
AU  - Muñoz-Fernandez, Lidia
AU  - Alcántara-Iniesta, Salvador
AU  - Soto-Cruz, Blanca Susana
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15458
AB  - In this work, we deals with the processing and characterization of transparent conducting ZnO thin films on p-type Silicon substrates (1 0 0) by air assisted Ultrasonic Spray Pyrolysis (USP) method. The thin films from different Zn acetate precursor solution concentrations (0.1, 0.2, 0.3 and 0.4 M) were deposited at several temperatures (400, 450 and 500 °C) with thickness from ∼100 to ∼500 nm. The effects of precursor solution concentration, deposition time and temperature on the structural, morphological, optical, and electrical properties of ZnO films were studied by X-ray Diffraction (XRD), Atomic Force Microscopy (AFM), UV–Vis-NIR spectroscopy, and Hall Effect techniques, respectively. It has been shown that on the ZnO film surface, the preferred orientation, the average crystallite size, the electrical resistivity and the RMS surface roughness depend on the substrate temperature. The grown films have showed a good adhesion and an excellent optical transmission of about 80–95% within the visible range (400–800 nm) and a direct band gap from 3.35 to 3.23 eV with the increase of the substrate temperature and the deposition time. All the PL spectra have exhibited a typical green-yellow emission band. Additionally photovoltaic (PV) activities of n-ZnO/p-Si heterostructures fabricated are investigated.
T2  - Advanced Powder Technology
T1  - Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature
SP  - 93
EP  - 100
VL  - 28
IS  - 1
DO  - 10.1016/j.apt.2016.11.016
UR  - https://hdl.handle.net/21.15107/rcub_dais_15458
ER  - 
@article{
author = "Flores-Carrasco, Gregorio and Muñoz-Fernandez, Lidia and Alcántara-Iniesta, Salvador and Soto-Cruz, Blanca Susana and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2017",
abstract = "In this work, we deals with the processing and characterization of transparent conducting ZnO thin films on p-type Silicon substrates (1 0 0) by air assisted Ultrasonic Spray Pyrolysis (USP) method. The thin films from different Zn acetate precursor solution concentrations (0.1, 0.2, 0.3 and 0.4 M) were deposited at several temperatures (400, 450 and 500 °C) with thickness from ∼100 to ∼500 nm. The effects of precursor solution concentration, deposition time and temperature on the structural, morphological, optical, and electrical properties of ZnO films were studied by X-ray Diffraction (XRD), Atomic Force Microscopy (AFM), UV–Vis-NIR spectroscopy, and Hall Effect techniques, respectively. It has been shown that on the ZnO film surface, the preferred orientation, the average crystallite size, the electrical resistivity and the RMS surface roughness depend on the substrate temperature. The grown films have showed a good adhesion and an excellent optical transmission of about 80–95% within the visible range (400–800 nm) and a direct band gap from 3.35 to 3.23 eV with the increase of the substrate temperature and the deposition time. All the PL spectra have exhibited a typical green-yellow emission band. Additionally photovoltaic (PV) activities of n-ZnO/p-Si heterostructures fabricated are investigated.",
journal = "Advanced Powder Technology",
title = "Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature",
pages = "93-100",
volume = "28",
number = "1",
doi = "10.1016/j.apt.2016.11.016",
url = "https://hdl.handle.net/21.15107/rcub_dais_15458"
}
Flores-Carrasco, G., Muñoz-Fernandez, L., Alcántara-Iniesta, S., Soto-Cruz, B. S., Milošević, O.,& Rabanal, M. E.. (2017). Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature. in Advanced Powder Technology, 28(1), 93-100.
https://doi.org/10.1016/j.apt.2016.11.016
https://hdl.handle.net/21.15107/rcub_dais_15458
Flores-Carrasco G, Muñoz-Fernandez L, Alcántara-Iniesta S, Soto-Cruz BS, Milošević O, Rabanal ME. Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature. in Advanced Powder Technology. 2017;28(1):93-100.
doi:10.1016/j.apt.2016.11.016
https://hdl.handle.net/21.15107/rcub_dais_15458 .
Flores-Carrasco, Gregorio, Muñoz-Fernandez, Lidia, Alcántara-Iniesta, Salvador, Soto-Cruz, Blanca Susana, Milošević, Olivera, Rabanal, Maria Eugenia, "Structural and functional properties of ZnO thin films grown on Si substrates by air assisted USP method from non-aqueous solutions at low-temperature" in Advanced Powder Technology, 28, no. 1 (2017):93-100,
https://doi.org/10.1016/j.apt.2016.11.016 .,
https://hdl.handle.net/21.15107/rcub_dais_15458 .
5
5
5

Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method

Flores-Carrasco, Gregorio; Carrillo-Lopez, J.; Martinez-Martinez, R.; Espinosa-Torres, N. D.; Muñoz, Lidia; Milošević, Olivera; Rabanal, Maria Eugenia

(Springer Berlin Heidelberg, 2016)

TY  - JOUR
AU  - Flores-Carrasco, Gregorio
AU  - Carrillo-Lopez, J.
AU  - Martinez-Martinez, R.
AU  - Espinosa-Torres, N. D.
AU  - Muñoz, Lidia
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/15968
AB  - Here, we report on the ZnO nanoparticles processing employing low-temperature (500 °C) ultrasonic spray pyrolysis (USP) method, using different Zn nitrate precursor solution concentrations (0.01, 0.1 and 1.0 M). Particle structural, morphological and luminescence characteristics were studied based on X-ray powder diffractometry, Fourier transform infrared spectroscopy, transmission electron microscopy (TEM/HRTEM), thermal analysis, UV–Vis diffuse reflectance spectra and photoluminescence measurements (PL). The generated so-called secondary particles have a hexagonal ZnO wurtzite-type crystalline structure with preferred orientation of (101) plane and quasi-spherical in shape. It was shown that such particle structural and morphological features are independent on the precursor solution concentrations used. All the PL spectra illustrate a strong green-yellow typical emission band exhibiting the corresponding redshift and variation of direct band gap from 3.22 to 3.12 eV with the increase in precursor concentration. The thermal analysis confirmed high thermal nanoparticles stability. The results proved that USP method successfully produces ZnO nanoparticles using neither dispersing agents nor post-heating treatments at high temperature, which allows rapid, continuous, single-step preparation, demonstrating a high potential for industrial applications.
PB  - Springer Berlin Heidelberg
T2  - Applied Physics A
T1  - Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method
VL  - 122
DO  - 10.1007/s00339-016-9708-4
UR  - https://hdl.handle.net/21.15107/rcub_dais_15968
ER  - 
@article{
author = "Flores-Carrasco, Gregorio and Carrillo-Lopez, J. and Martinez-Martinez, R. and Espinosa-Torres, N. D. and Muñoz, Lidia and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2016",
abstract = "Here, we report on the ZnO nanoparticles processing employing low-temperature (500 °C) ultrasonic spray pyrolysis (USP) method, using different Zn nitrate precursor solution concentrations (0.01, 0.1 and 1.0 M). Particle structural, morphological and luminescence characteristics were studied based on X-ray powder diffractometry, Fourier transform infrared spectroscopy, transmission electron microscopy (TEM/HRTEM), thermal analysis, UV–Vis diffuse reflectance spectra and photoluminescence measurements (PL). The generated so-called secondary particles have a hexagonal ZnO wurtzite-type crystalline structure with preferred orientation of (101) plane and quasi-spherical in shape. It was shown that such particle structural and morphological features are independent on the precursor solution concentrations used. All the PL spectra illustrate a strong green-yellow typical emission band exhibiting the corresponding redshift and variation of direct band gap from 3.22 to 3.12 eV with the increase in precursor concentration. The thermal analysis confirmed high thermal nanoparticles stability. The results proved that USP method successfully produces ZnO nanoparticles using neither dispersing agents nor post-heating treatments at high temperature, which allows rapid, continuous, single-step preparation, demonstrating a high potential for industrial applications.",
publisher = "Springer Berlin Heidelberg",
journal = "Applied Physics A",
title = "Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method",
volume = "122",
doi = "10.1007/s00339-016-9708-4",
url = "https://hdl.handle.net/21.15107/rcub_dais_15968"
}
Flores-Carrasco, G., Carrillo-Lopez, J., Martinez-Martinez, R., Espinosa-Torres, N. D., Muñoz, L., Milošević, O.,& Rabanal, M. E.. (2016). Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method. in Applied Physics A
Springer Berlin Heidelberg., 122.
https://doi.org/10.1007/s00339-016-9708-4
https://hdl.handle.net/21.15107/rcub_dais_15968
Flores-Carrasco G, Carrillo-Lopez J, Martinez-Martinez R, Espinosa-Torres ND, Muñoz L, Milošević O, Rabanal ME. Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method. in Applied Physics A. 2016;122.
doi:10.1007/s00339-016-9708-4
https://hdl.handle.net/21.15107/rcub_dais_15968 .
Flores-Carrasco, Gregorio, Carrillo-Lopez, J., Martinez-Martinez, R., Espinosa-Torres, N. D., Muñoz, Lidia, Milošević, Olivera, Rabanal, Maria Eugenia, "Optical and morpho-structural properties of ZnO nanostructured particles synthesized at low temperature via air-assisted USP method" in Applied Physics A, 122 (2016),
https://doi.org/10.1007/s00339-016-9708-4 .,
https://hdl.handle.net/21.15107/rcub_dais_15968 .
6
4
7

Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation

Muñoz-Fernandez, Lidia; Sierra-Fernández, Aránzazu; Milošević, Olivera; Rabanal, Maria Eugenia

(Elsevier, 2016)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Sierra-Fernández, Aránzazu
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/15991
AB  - Noble metal/ZnO nanoparticles were synthesized by a solvothermal method. The influence of reaction time, noble metal presence or kind of noble metal (Ag or Pt) was evaluated. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (DRS) and BET surface area analysis. Hexagonal wurtzite and fcc were obtained for crystalline structures for ZnO and Ag/Pt, respectively. No characteristic phases which correspond to crystalline impurities were detected. It was displayed that ZnO nanoparticles presented nanowire morphology (NWs), while the metallic silver or platinum were found taking on quasi-spherical nanoparticles morphology (NPs), which appeared well dispersed onto ZnO NWs surface. Regarding particle sizes, ZnO aspect ratios were 2.5–13.3, Ag and Pt diameters were 17.3–24.3 nm and around ≈6.3 nm, respectively. The photocatalytic behavior of the synthesized systems was studied as well by the removing reaction of methylene blue (MB) in water solution. It was verified that the increase of the photocatalytic activity was due to the noble metal presence, exhibiting higher effect of silver than platinum. Photocatalytic results (all samples reached >70% MB elimination) demonstrated the viability of the noble metal/ZnO nanocomposites synthesized by solvothermal method for usage in environmental applications.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation
SP  - 983
EP  - 993
VL  - 27
IS  - 3
DO  - 10.1016/j.apt.2016.03.021
UR  - https://hdl.handle.net/21.15107/rcub_dais_15991
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Sierra-Fernández, Aránzazu and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2016",
abstract = "Noble metal/ZnO nanoparticles were synthesized by a solvothermal method. The influence of reaction time, noble metal presence or kind of noble metal (Ag or Pt) was evaluated. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (DRS) and BET surface area analysis. Hexagonal wurtzite and fcc were obtained for crystalline structures for ZnO and Ag/Pt, respectively. No characteristic phases which correspond to crystalline impurities were detected. It was displayed that ZnO nanoparticles presented nanowire morphology (NWs), while the metallic silver or platinum were found taking on quasi-spherical nanoparticles morphology (NPs), which appeared well dispersed onto ZnO NWs surface. Regarding particle sizes, ZnO aspect ratios were 2.5–13.3, Ag and Pt diameters were 17.3–24.3 nm and around ≈6.3 nm, respectively. The photocatalytic behavior of the synthesized systems was studied as well by the removing reaction of methylene blue (MB) in water solution. It was verified that the increase of the photocatalytic activity was due to the noble metal presence, exhibiting higher effect of silver than platinum. Photocatalytic results (all samples reached >70% MB elimination) demonstrated the viability of the noble metal/ZnO nanocomposites synthesized by solvothermal method for usage in environmental applications.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation",
pages = "983-993",
volume = "27",
number = "3",
doi = "10.1016/j.apt.2016.03.021",
url = "https://hdl.handle.net/21.15107/rcub_dais_15991"
}
Muñoz-Fernandez, L., Sierra-Fernández, A., Milošević, O.,& Rabanal, M. E.. (2016). Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation. in Advanced Powder Technology
Elsevier., 27(3), 983-993.
https://doi.org/10.1016/j.apt.2016.03.021
https://hdl.handle.net/21.15107/rcub_dais_15991
Muñoz-Fernandez L, Sierra-Fernández A, Milošević O, Rabanal ME. Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation. in Advanced Powder Technology. 2016;27(3):983-993.
doi:10.1016/j.apt.2016.03.021
https://hdl.handle.net/21.15107/rcub_dais_15991 .
Muñoz-Fernandez, Lidia, Sierra-Fernández, Aránzazu, Milošević, Olivera, Rabanal, Maria Eugenia, "Solvothermal synthesis of Ag/ZnO and Pt/ZnO nanocomposites and comparison of their photocatalytic behaviors on dyes degradation" in Advanced Powder Technology, 27, no. 3 (2016):983-993,
https://doi.org/10.1016/j.apt.2016.03.021 .,
https://hdl.handle.net/21.15107/rcub_dais_15991 .
73
43
74

ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization

Muñoz, Lidia; Sierra-Fernández, Aránzazu; Flores-Carrasco, Gregorio; Gómez-Villalba, Luz Stella; Milošević, Olivera; Rabanal, Maria Eugenia

(Belgrade : Serbian Ceramic Society, 2015)

TY  - CONF
AU  - Muñoz, Lidia
AU  - Sierra-Fernández, Aránzazu
AU  - Flores-Carrasco, Gregorio
AU  - Gómez-Villalba, Luz Stella
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/745
AB  - In the area of nanotechnology, which is one of the most active research fields, well-known functional material (ZnO) generates enormous scientific interest owing to its extraordinary properties and so, its novel applications at the nanometric scale. Besides the ZnO properties and its applications, its photocatalytic behavior has been widely studied. Currently, many works are focused on developing of hybrid materials of noble metal-doped ZnO to improve its catalytic activity. With this aim, using silver or platinum nanoparticles on the surface of nanoparticles could be a suitable option. So, in our study, synthesis (by solvothermal method) and characterization (structural, chemical, morphological among others) of ZnO nanostructured particles with silver or platinum nanoparticles (ZnO&Ag/Pt) have been developed. Afterward, the photocatalytic behavior has been evaluated. The best photocatalytic results (>60 % pollutant removal) demonstrate the viability for its application in the degradation of contaminants in water and, so, prove that the system morphology is critical to the properties of the obtained material.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015
T1  - ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_dais_745
ER  - 
@conference{
author = "Muñoz, Lidia and Sierra-Fernández, Aránzazu and Flores-Carrasco, Gregorio and Gómez-Villalba, Luz Stella and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2015",
abstract = "In the area of nanotechnology, which is one of the most active research fields, well-known functional material (ZnO) generates enormous scientific interest owing to its extraordinary properties and so, its novel applications at the nanometric scale. Besides the ZnO properties and its applications, its photocatalytic behavior has been widely studied. Currently, many works are focused on developing of hybrid materials of noble metal-doped ZnO to improve its catalytic activity. With this aim, using silver or platinum nanoparticles on the surface of nanoparticles could be a suitable option. So, in our study, synthesis (by solvothermal method) and characterization (structural, chemical, morphological among others) of ZnO nanostructured particles with silver or platinum nanoparticles (ZnO&Ag/Pt) have been developed. Afterward, the photocatalytic behavior has been evaluated. The best photocatalytic results (>60 % pollutant removal) demonstrate the viability for its application in the degradation of contaminants in water and, so, prove that the system morphology is critical to the properties of the obtained material.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015",
title = "ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_dais_745"
}
Muñoz, L., Sierra-Fernández, A., Flores-Carrasco, G., Gómez-Villalba, L. S., Milošević, O.,& Rabanal, M. E.. (2015). ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015
Belgrade : Serbian Ceramic Society., 38-38.
https://hdl.handle.net/21.15107/rcub_dais_745
Muñoz L, Sierra-Fernández A, Flores-Carrasco G, Gómez-Villalba LS, Milošević O, Rabanal ME. ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015. 2015;:38-38.
https://hdl.handle.net/21.15107/rcub_dais_745 .
Muñoz, Lidia, Sierra-Fernández, Aránzazu, Flores-Carrasco, Gregorio, Gómez-Villalba, Luz Stella, Milošević, Olivera, Rabanal, Maria Eugenia, "ZnO&Ag and ZnO&Pt system: synthesis and structural, morphological and functional characterization" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015 (2015):38-38,
https://hdl.handle.net/21.15107/rcub_dais_745 .

Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications

Muñoz, Lidia; Sierra-Fernández, Aránzazu; Gómez-Villalba, Luz Stella; Milošević, Olivera; Rabanal, Maria Eugenia

(Belgrade : Serbian Ceramic Society, 2014)

TY  - CONF
AU  - Muñoz, Lidia
AU  - Sierra-Fernández, Aránzazu
AU  - Gómez-Villalba, Luz Stella
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/594
AB  - In this work is reported the solvothermal synthesis of hybrid nanostructured ZnO&Ag systems starting from zinc nitrate hexahydrate (Zn(NO3)2•6H2O) and silver nitrate (Ag(NO3)2) as precursors. The structural and morphological properties of the obtained hybrid materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Subsequently, the photocatalytic behavior of prepared systems was evaluated. The results verify the viability of as-synthesized ZnO&Ag nanocomposites for its application in the removal of contaminants in water. The best results (percentage of pollutant removal > 99 %) are obtained for samples synthesized at low temperature, intermediate times, higher ratios Ag+/Zn2+ and in the presence of CTAB, which controls the final morphology of nanostructures and the dispersion thereof. These results prove that the system morphology is critical to the properties of the obtained material.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014
T1  - Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications
SP  - 60
EP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_dais_594
ER  - 
@conference{
author = "Muñoz, Lidia and Sierra-Fernández, Aránzazu and Gómez-Villalba, Luz Stella and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2014",
abstract = "In this work is reported the solvothermal synthesis of hybrid nanostructured ZnO&Ag systems starting from zinc nitrate hexahydrate (Zn(NO3)2•6H2O) and silver nitrate (Ag(NO3)2) as precursors. The structural and morphological properties of the obtained hybrid materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Subsequently, the photocatalytic behavior of prepared systems was evaluated. The results verify the viability of as-synthesized ZnO&Ag nanocomposites for its application in the removal of contaminants in water. The best results (percentage of pollutant removal > 99 %) are obtained for samples synthesized at low temperature, intermediate times, higher ratios Ag+/Zn2+ and in the presence of CTAB, which controls the final morphology of nanostructures and the dispersion thereof. These results prove that the system morphology is critical to the properties of the obtained material.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014",
title = "Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications",
pages = "60-60",
url = "https://hdl.handle.net/21.15107/rcub_dais_594"
}
Muñoz, L., Sierra-Fernández, A., Gómez-Villalba, L. S., Milošević, O.,& Rabanal, M. E.. (2014). Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014
Belgrade : Serbian Ceramic Society., 60-60.
https://hdl.handle.net/21.15107/rcub_dais_594
Muñoz L, Sierra-Fernández A, Gómez-Villalba LS, Milošević O, Rabanal ME. Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014. 2014;:60-60.
https://hdl.handle.net/21.15107/rcub_dais_594 .
Muñoz, Lidia, Sierra-Fernández, Aránzazu, Gómez-Villalba, Luz Stella, Milošević, Olivera, Rabanal, Maria Eugenia, "Ag&ZnO Obtained by Solvothermal Method for Photocatalytic Applications" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014 (2014):60-60,
https://hdl.handle.net/21.15107/rcub_dais_594 .