编号：CPJS01722

篇名： Ag_2S-石墨烯/TiO_2的声化学法合成及可见光催化活性(英文)

作者： Ze‐Da Meng； Lei Zhu； Kefayat Ullah； Shu Ye； Qian Sun； Won‐Ch

关键词： Silver sulfide Graphene Titanium dioxide UV‐Vis absorption spectroscopy Visible light Rhodamine B；

机构： Department of Advanced Materials Science and Engineering,Hanseo University； Department of Advanced M

摘要： Ag2S‐graphene/TiO2 composites were synthesized by a facile sonochemical method.The products were characterized by X‐ray diffraction,scanning electron microscopy,energy dispersive X‐ray spectroscopy,transmission electron microscopy,and UV‐Vis diffuse reflectance spectrophotometry.During the synthesis reaction,the reduction of graphene oxide and loading of Ag2S and TiO2 particles were achieved.The Ag2S‐graphene/TiO2 composites possessed a large adsorption capacity for dyes,an extended light absorption range,and efficient charge separation properties.Hence,in the photodegradation of rhodamine B,a significant enhancement in the reaction rate was observed with the Ag2S‐graphene/TiO2 composites as compared to pure TiO2.The generation of reactive oxygen species was detected by the oxidation of 1,5‐diphenyl carbazide to 1,5‐diphenyl carbazone.The high activity was attributed to the synergetic effects of high charge mobility and the red shift in the absorption edge of the Ag2S‐graphene/TiO2 composites.