摘要
采用溶剂热法合成了分层结构的铜锌锡硫(CZTS)纳米结构,用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、紫外可见分光光度计(UV-Vis)、拉曼光谱等现代表征手段对样品进行表征,并以亚甲基蓝(MB)染色剂的模拟废水为目标污染物,探讨了CZTS纳米结构在可见光照射下的光催化性能.在10h可见光催化反应后,CZTS分层纳米结构对MB的降解率高达93.6%.对比实验研究表明,采用类似方法制备的CZTS无规则纳米粒子对MB的降解率仅为51.6%,表明分层CZTS纳米结构具有优异的光催化性能.我们对分层CZTS纳米结构的光催化性能进行了合理的解释.
CUEZnSnS4 （CZTS） hierarchical nanostructures were synthesized via a facile solvothermal method in large quantity. The morphology, size, structure, composition and optical properties of the as-obtained CZTS were characterized by SEM, XRD, Raman scattering spectra. The visible light photocatalytic activity of the as-synthesized CZTS was investigated by degradation of methylene blue （MB）. The results indicate that the as-prepared CZTS hierarchical nanostructures exhibit an enhanced photocatalytic activity with 93.6% degradation of MB after 10 h reaction under visible light irradiation, which was much higher than that of CZTS nanoparticles （51.6%）, which were prepared by a similar method used to synthesize CZTS hierarchical nanostructures.
出处
《中央民族大学学报（自然科学版）》
2014年第1期5-11,共7页
Journal of Minzu University of China(Natural Sciences Edition)
基金
国家自然科学基金(NO.NSFC 11074312)
"985工程"
"211工程"资助项目
关键词
铜锌锡硫
光催化
亚甲基蓝
Cu2ZnSnS4
solvothermal synthesis
photocatalytic activity
