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Fernandez, P.

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  • Fernandez, P. (2)
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Author's Bibliography

Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater

Flores-Carrasco, Gregorio; Rodriguez-Pena, M.; Milošević, Olivera; Urbieta, A.; Fernandez, P.; Rabanal, Maria Eugenia

(Belgrade : Materials Research Society of Serbia, 2019)

TY  - CONF
AU  - Flores-Carrasco, Gregorio
AU  - Rodriguez-Pena, M.
AU  - Milošević, Olivera
AU  - Urbieta, A.
AU  - Fernandez, P.
AU  - Rabanal, Maria Eugenia
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6684
AB  - Semiconductor nanoparticles (NPs) and nanowires (NWs) of doped ZnO system with different dopant content have been synthesized by Polyol-Mediated Thermolysis (PMT) process and Vapour-Solid (VS) reaction. The average crystallite size, morphology, specific surface area, and direct band gap have been evaluated. The structural and functional characteristics have been studied by X-Ray Diffraction techniques (XRD), Field Emission Scanning Electron Microscope (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), Brunauer, Emmett and Teller (BET) method, UV-Vis Diffuse Reflectance Spectra (DRS), UV-Vis Spectroscopy, and Photoluminescence measurements (PL). Also, the photocatalytic activities of pure and doped ZnONPs were evaluated by removal rate of Methylene Blue (MB) under UV irradiation (365 nm) at room temperature. XRD patterns revealed the common hexagonal ZnO Wurtzite-type structures with a preferred orientation of (101) plane. Secondary phases as CeO2, Ce2O3, Ce, RuO2, Ru3O4, Ruhave been identified. For both dopant, Ceand Ru, and for all the concentrations in the precursor solution, FESEM and HRTEM showed NPswith morphologies ranging from spherical/ellipsoidal to hexagonal. The size of NPs was observed to decrease (from ~30 to ~16 nm) with increasing doping concentration due to the interaction between the Ce-O-Zn or Ru-O-Zn ions. EDS results confirmed the incorporation of Ce or Ru ions into ZnO lattice.Using the Kubelka-Munk treatment on the diffuse reflectance spectra, the direct band gap energy has been estimated to be slightly lower than 3.0 eV in both, the Ce and Ru-doped samples. Compared with pure ZnO NPs, the PL spectra of the doped NPs showed red-shifted UV emission and an enhanced blue emission with the typical broad green-yellow emission. The results showed that photocatalytic efficiency of doped ZnO NPs was always enhanced.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019
T1  - Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater
SP  - 28
EP  - 29
ER  - 
@conference{
author = "Flores-Carrasco, Gregorio and Rodriguez-Pena, M. and Milošević, Olivera and Urbieta, A. and Fernandez, P. and Rabanal, Maria Eugenia",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6684",
abstract = "Semiconductor nanoparticles (NPs) and nanowires (NWs) of doped ZnO system with different dopant content have been synthesized by Polyol-Mediated Thermolysis (PMT) process and Vapour-Solid (VS) reaction. The average crystallite size, morphology, specific surface area, and direct band gap have been evaluated. The structural and functional characteristics have been studied by X-Ray Diffraction techniques (XRD), Field Emission Scanning Electron Microscope (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), Brunauer, Emmett and Teller (BET) method, UV-Vis Diffuse Reflectance Spectra (DRS), UV-Vis Spectroscopy, and Photoluminescence measurements (PL). Also, the photocatalytic activities of pure and doped ZnONPs were evaluated by removal rate of Methylene Blue (MB) under UV irradiation (365 nm) at room temperature. XRD patterns revealed the common hexagonal ZnO Wurtzite-type structures with a preferred orientation of (101) plane. Secondary phases as CeO2, Ce2O3, Ce, RuO2, Ru3O4, Ruhave been identified. For both dopant, Ceand Ru, and for all the concentrations in the precursor solution, FESEM and HRTEM showed NPswith morphologies ranging from spherical/ellipsoidal to hexagonal. The size of NPs was observed to decrease (from ~30 to ~16 nm) with increasing doping concentration due to the interaction between the Ce-O-Zn or Ru-O-Zn ions. EDS results confirmed the incorporation of Ce or Ru ions into ZnO lattice.Using the Kubelka-Munk treatment on the diffuse reflectance spectra, the direct band gap energy has been estimated to be slightly lower than 3.0 eV in both, the Ce and Ru-doped samples. Compared with pure ZnO NPs, the PL spectra of the doped NPs showed red-shifted UV emission and an enhanced blue emission with the typical broad green-yellow emission. The results showed that photocatalytic efficiency of doped ZnO NPs was always enhanced.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019",
title = "Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater",
pages = "28-29"
}
Flores-Carrasco, G., Rodriguez-Pena, M., Milošević, O., Urbieta, A., Fernandez, P.,& Rabanal, M. E. (2019). Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater.
Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019Belgrade : Materials Research Society of Serbia., 28-29.
Flores-Carrasco G, Rodriguez-Pena M, Milošević O, Urbieta A, Fernandez P, Rabanal ME. Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater. Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019. 2019;:28-29
Flores-Carrasco Gregorio, Rodriguez-Pena M., Milošević Olivera, Urbieta A., Fernandez P., Rabanal Maria Eugenia, "Synthesis of Ce/Ru Doped ZnO photocatalysts to the degradation of emerging pollutants in wastewater" (2019):28-29

Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties

Flores-Carrasco, Gregorio; Urbieta, A.; Fernandez, P.; Milošević, Olivera; Rabanal, Maria Eugenia

(ICCCI, 2018)

TY  - CONF
AU  - Flores-Carrasco, Gregorio
AU  - Urbieta, A.
AU  - Fernandez, P.
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4677
AB  - Semiconductor nanoparticles (NPs) and nanowires (NWs) of doped ZnO system have been synthesised at low temperature (190 °C) by a novel Polyol-Mediated Thermolysis (PMT) process and Vapour-Solid (VS) reaction. Ce/Ru doped ZnO NPs with different molar content (1-3--5-10%) have been synthesised by both experimental processes. The crystallite size, morphology, specific surface area and band gap have been evaluated. Also, the structural and functional characteristics were carried out by X-ray diffraction technique (XRD), high resolution transmission electron microscopy (HRTEM), Brunauer, Emmett and Teller (BET) method, UV-Vis diffuse reflectance spectra (DRS), UV-Vis spectroscopy and photoluminescence measurements (PL). Also, the photocatalytic activities of ZnO nanoparticles were evaluated by removal rate of methyleneblue (MB) under UV irradiation (365 nm) at RT. XRD patterns revealed a hexagonal ZnO wurtzite-type crystalline structure with a preferred orientation of(101) plane. Any secondary phases have been identified such as Ce02, Ce203, ee, Ru02, Ru304, Ru. HRTEM showed NPs in shape from spherical/ellipsoidal to hexagonal, that does not change significantly with the increasing of precursor solution concentration and kind of dopant element in the samples obtained from PMTprocess. The size of NPs was observed in the range from 16 to 23 run. Using the Kubelka-Munk treatment on the diffuse reflectance spectra, the direct band energy has been estimated at <3.0 eV in the Ru-doped samples. The PL spectra mainly consist of four emission bands: (i) a strong UV emission band, (ii) a weak blue band, (iii) a blue-green band and (iv) a green-yellow band, respectively. The reported results showed the photocatalytic efficiency of doped ZnO nanoparticles was always enhanced.
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  - Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties
SP  - 119
EP  - 119
ER  - 
@conference{
author = "Flores-Carrasco, Gregorio and Urbieta, A. and Fernandez, P. and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4677",
abstract = "Semiconductor nanoparticles (NPs) and nanowires (NWs) of doped ZnO system have been synthesised at low temperature (190 °C) by a novel Polyol-Mediated Thermolysis (PMT) process and Vapour-Solid (VS) reaction. Ce/Ru doped ZnO NPs with different molar content (1-3--5-10%) have been synthesised by both experimental processes. The crystallite size, morphology, specific surface area and band gap have been evaluated. Also, the structural and functional characteristics were carried out by X-ray diffraction technique (XRD), high resolution transmission electron microscopy (HRTEM), Brunauer, Emmett and Teller (BET) method, UV-Vis diffuse reflectance spectra (DRS), UV-Vis spectroscopy and photoluminescence measurements (PL). Also, the photocatalytic activities of ZnO nanoparticles were evaluated by removal rate of methyleneblue (MB) under UV irradiation (365 nm) at RT. XRD patterns revealed a hexagonal ZnO wurtzite-type crystalline structure with a preferred orientation of(101) plane. Any secondary phases have been identified such as Ce02, Ce203, ee, Ru02, Ru304, Ru. HRTEM showed NPs in shape from spherical/ellipsoidal to hexagonal, that does not change significantly with the increasing of precursor solution concentration and kind of dopant element in the samples obtained from PMTprocess. The size of NPs was observed in the range from 16 to 23 run. Using the Kubelka-Munk treatment on the diffuse reflectance spectra, the direct band energy has been estimated at <3.0 eV in the Ru-doped samples. The PL spectra mainly consist of four emission bands: (i) a strong UV emission band, (ii) a weak blue band, (iii) a blue-green band and (iv) a green-yellow band, respectively. The reported results showed the photocatalytic efficiency of doped ZnO nanoparticles was always enhanced.",
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 = "Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties",
pages = "119-119"
}
Flores-Carrasco, G., Urbieta, A., Fernandez, P., Milošević, O.,& Rabanal, M. E. (2018). Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties.
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 AbstractsICCCI., 119-119.
Flores-Carrasco G, Urbieta A, Fernandez P, Milošević O, Rabanal ME. Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties. 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;:119-119
Flores-Carrasco Gregorio, Urbieta A., Fernandez P., Milošević Olivera, Rabanal Maria Eugenia, "Synthesis and Characterization of functional ceramic materials at the nano- and microscale with enhanced properties" (2018):119-119