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Effects of Sulfur Sources on the Microstructure and Photocatalytic Activity of ZnIn2S4 Microspheres
Shunsheng Chen,Shaozhen Li,Liangbin Xiong,Guohong Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.7
Two kinds of hexagonal ZnIn2S4 samples have been synthesized by applying different sulfur sources of cysteine and thioacetamide (TAA) in a hydrothermal process. The two samples have the same crystal structure but different visible-light absorption and photodegradation activity of methyl orange. The results of Brunauer–Emmett–Teller (BET) and scanning electron microscopy (SEM) revealed that, compared with ZnIn2S4 prepared using cysteine as sulfur source, ZnIn2S4 samples prepared using TAA possess much higher specific surface areas, smaller particle size and rather thinner nanosheets, which not only can enhance the adsorption of methyl orange on the surface of catalysts but also improve the transport efficiency of photogenerated charge carries.