期刊
APPLIED SURFACE SCIENCE
卷 257, 期 23, 页码 10188-10194出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2011.07.016
关键词
CuGaS2; Solvothermal; L-Cystine; Raman spectrum
类别
资金
- National Natural Sciences Foundation of China [50772075, 50972107]
- Key Foundation of Zhejiang Province Natural Science Foundation [Z4110347]
Sphere-like CuGaS2 nanoparticles were successfully synthesized by a simple biomolecule-assisted solvothermal route using a mixed solution compose of ethylenediamine and distilled water (1:1, v/v), in which L-cystine was used as the sulfide source and complexing molecule. Phase analysis was carried out by X-ray diffraction (XRD) and the results confirmed the as-prepared CuGaS2 as a single-phase tetragonal structure. Field-emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) showed that the morphologies of CuGaS2 were sphere-like nanoparticles in shape, and the average diameters was about 600 nm. X-ray photoelectron spectrum (XPS) was used to analyze the composition of CuGaS2 and the ratio of Cu/Ga/S is 1:0.97:1.98. Raman spectrum of the obtained CuGaS2 exhibit a high-intensity peak of the A1 mode at 305 cm(-1). The influence of reaction temperature, time and solvent was initially investigated. The possible formation mechanism was also discussed. (C) 2011 Elsevier B.V. All rights reserved.
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