Journal
CERAMICS INTERNATIONAL
Volume 38, Issue 3, Pages 2195-2200Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2011.10.066
Keywords
Microwave hydrothermal; CuS; One-dimensional; Crystal growth
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Funding
- Research and National Natural Science Foundation of China [50942047]
- Innovation Team Assistance Foundation of Shaanxi University of Science and Technology [TD 09-05]
- Graduate Innovation Foundation of Shaanxi University of Science and Technology
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One-dimensional (1D) CuS microstructures of assembled chains and rods have been prepared using a facile polyvinylpyrrolidone (PVP) assisted microwave hydrothermal (MH) method. The crystallites were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and UV-vis optical absorption spectroscopy. The crystal growth and morphology evolution process have been investigated through time-dependent experiments, and the assembling of sphere into chain-like structure and the further transformation into rod-like morphology are observed. A possible formation mechanism of the as-obtained 1D structure was proposed after the investigation of the effects of the concentration of PVP and the solvent on the final products in detail. The UV-vis spectra of the spherical and rod-like CuS crystallites show a strong absorption in the visible spectrum between 500 nm and 800 nm, while the rod-like structure exhibits a distinct red shift compared to the spheres. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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