水热法合成多孔Ag_2S敏化二氧化钛催化剂及其可见光催化活性(英文)

查看全文 作　　者：TRISHA [1]Ghosh;OH Won-[1]Chun

机构地区：[1]Department of Advanced Materials Science & Engineering,Hanseo University

出　　处：《催化学报》索引2012年第33卷第2期,共7页

基　　金：supported by the Department of Science & Technology, New Delhi under SERC Scheme, DST No. SR/S1/PC-40/2006 摘　　要：Porous Ag2S sensitized TiO2 catalysts were synthesized by the hydrothermal process.The crystallization and porous structure of the Ag2S/TiO2 composite photocatalysts were investigated by X-ray diffraction,scanning electron microscopy with energy dispersive X-ray analysis,UV-Vis diffuse reflectance spectroscopy,and N2 adsorption.The Ag2S/TiO2 composites were mainly composed of anatase TiO2 and acanthite Ag2S.The absorption edge wavelengths of TiO2 and the Ag2S/TiO2 composite prepared with 3 mmol Na2S.5H2O were 400 and 800 nm,respectively,that is,the absorption edge of the composite had a pronounced red shift.The photocatalytic activity under visible light was investigated by the degradation of methylene blue with a UV-Vis spectrophotometer.The photocatalytic activities under visible light of the Ag2S/TiO2 photocatalysts were much higher than that of TiO2. 关键词：silver sulfide titanium dioxide visible light photocatalytic activity methylene blue

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水热法合成多孔Ag_2S敏化二氧化钛催化剂及其可见光催化活性(英文)

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