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中文摘要：
以二水氯化铜（CuCl2.2H2O）和三氯化镓（GaCl3）为先驱体,生物分子L-半胱氨酸（C3H7NO2S）为硫源和模板剂,通过溶剂热法合成了CuGaS2微球。所得样品用XRD,FESEM,EDS,XPS,TEM,HRTEM和SAED进行表征。结果表明,在190℃反应24 h可得到结晶良好、形貌规整的四方晶系CuGaS2微球,直径为2-4μm。经计算,其晶胞参数为a=0.5355 nm和c=1.0478 nm。根据实验结果,提出了CuGaS2微球可能的生长机理。
英文摘要：
An effective biomolecule-assisted synthetic route has been successfully developed to prepare copper gallium sulfide（CuGaS2） microspheres under solvothermal conditions using CuCl2·2H2O,GaCl3 and L-cysteine as source materials,in which L-cysteine was used as the sulfide source and complexing molecule.The morphology,structure,and phase composition of the as-prepared CuGaS2 products were investigated in detail by XRD,FESEM,EDS,TEM（HRTEM） and XPS.The results demonstrated that the synthesized CuGaS2 microspheres had tetragonal structure with good crystallinity and regular morphology at 190 ℃ for 24 h,and the diameter of the microsphere was 2-4 μm.The calculation indicated that lattice constants a=0.5535 nm and c=1.0478 nm.Meanwhile,a possible growth mechanism was proposed based on the investigations.
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