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1735596 
Journal Article 
A facile chemical route to copper sulfide CuS nanocrystallites - pH effect of the morphology and the shape of them 
Simonescu, CM; Patron, L; Teodorescu, VS; Brezeanu, M; Capatina, C 
2006 
Yes 
Journal of Optoelectronics and Advanced Materials
ISSN: 1454-4164 
8 
2 
597-600 
WOS:000237001000042 
A facile chemical route for the synthesis of copper sulfide (CuS) nanocrystallites consists of the reaction between Cu(CH3COO)(2)(H2O)-H-. and Na(2)S(2)O(3)(.)5H(2)O. In this reaction the influence of the following factors was pursued: pH value, reaction time, molar ratios, temperature and others. In this article we tried to establish the evolution of the morphology and the shape of the CuS nanocrystallites with the pH value. The CuS nanocrystallites obtained were studied by X ray diffraction, IR spectrometry, TEM - transmission electron microscopy and SAED selected area electron diffraction. The CuS crystallites are formed in spherical or "discoidal" particles which are bonded in bigger aggregates. The reaction pH value was varied from a slightly acid value to an alkali value. In case of alkali medium the crystallites dimensions were smaller than their value in slightly acid medium. 
copper sulfide nanocrystallites; pH effect; XRD; IR; TEM