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

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2019
muozfernandez2017.pdf (1.707Mb)
Authors
Muñoz-Fernandez, Lidia
Alkan, G.
Milošević, Olivera
Rabanal, Maria Eugenia
Friedrich, B.
Article (Accepted Version)
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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 maximu...m 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.

Keywords:
Ag/ZnO / sore-shell structures / ultrasonic spray pyrolysis
Source:
Catalysis Today, 2019, 321-322, 26-33
Publisher:
  • Elsevier
Projects:
  • Autonomous Region Program of Madrid, Spain, MULTIMAT-CHALLENGE (ref. S2013/MIT-2862)
  • Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
  • Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
Note:
  • This is the peer-reviewed version of 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
  • Supporting information: http://dais.sanu.ac.rs/handle/123456789/5973

DOI: 10.1016/j.cattod.2017.11.029

ISSN: 0920-5861

WoS: 000451030700005

Scopus: 2-s2.0-85035353170
[ Google Scholar ]
10
11
URI
http://dais.sanu.ac.rs/123456789/4602
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, G.
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, B.
PY  - 2019
UR  - http://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
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Alkan, G. and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4602",
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"
}
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). Catalysis Today. 2019;321-322:26-33
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 TodayElsevier., 321-322, 26-33. 
https://doi.org/10.1016/j.cattod.2017.11.029
Muñoz-Fernandez Lidia, Alkan G., Milošević Olivera, Rabanal Maria Eugenia, Friedrich B., "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)" 321-322 (2019):26-33,
https://doi.org/10.1016/j.cattod.2017.11.029 .

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