Mechanochemically synthesised ZnxCd1-xS nanoparticles for solar energy applications

Dutkova, Erika, Balaz, Peter, Pourghahramani, Parviz, Balek, Vladimir, Nguyen, Anh V., Satka, Alexander, Kovac, Jaroslav and Ficeriova, Jana (2012) Mechanochemically synthesised ZnxCd1-xS nanoparticles for solar energy applications. Journal of Nano Research, 18-19 : 247-256.

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Author Dutkova, Erika
Balaz, Peter
Pourghahramani, Parviz
Balek, Vladimir
Nguyen, Anh V.
Satka, Alexander
Kovac, Jaroslav
Ficeriova, Jana
Title Mechanochemically synthesised ZnxCd1-xS nanoparticles for solar energy applications
Formatted title Mechanochemically synthesised ZnxCd1-xS nanoparticles for solar energy applications
Journal name Journal of Nano Research  (ERA 2012 Listed)
Publication date 2012-01
Sub-type Article
DOI 10.4028/www.scientific.net/JNanoR.18-19.247
Volume number 18-19
ISSN 1662-5250; 1661-9897
Start page 247
End page 256
Total pages 10
Place of publication Stafa-Zurich, Switzerland
Publisher Trans Tech Publications
Collection year 2013
Language eng
Formatted abstract The mechanochemical solid-state synthesis of ZnxCd1-xS nanoparticles from zinc acetate, cadmium acetate and sodium sulphide in a planetary laboratory mill is described. Through changing the molar ratio of the Zn and Cd precursors, ZnxCd1-xS nanoparticles of different composition were prepared. Structural, surface and morphological properties were investigated by XRD, XPS, SEM and UV-VIS. Diffusion structural diagnostics was characterised by the emanation thermal analysis (ETA) results measured on heating of the samples. The cubic phase was found to be stable under mechanochemical treatment, as determined by XRD. The mixed phases were found to have ideal solution behaviours. In addition, microstructural characterisation indicated that mechanochemical treatment resulted in a structural refinement with a surface weighted crystallite size about 2 nm. The additional information of microstructure development and transport properties of the samples on heating was obtained by ETA. The calculated lattice parameters of mixed crystals linearly depend on the composition of ZnxCd1-xS nanoparticles. The S(2p), Zn(2p) and Cd(3d) core levels of the ZnxCd1-xS nanocrystallites reveal two different types of sulphur, zinc and cadmium unlike bulk CdS and ZnS. The calculated results indicate that the quantum-size effect in the nanoparticles is not negligible. The differences in the absorption edge and the emission peak position of the nanoparticles depend not only composition. Applied high-energy milling is a facile, efficient, and scalable process that does not require a solvent and can be performed under ambient conditions. Therefore, it is a promising candidate for the production of nanocrystalline materials.
Keyword Nanocrystalline materials
Mechanochemical synthesis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article
Collections: School of Chemical Engineering Publications
Official 2013 Collection
 
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