photocatalycit SnSxTiO2 含禁带宽度图.pdf

ARTICLE IN PRESS Journal of Solid State Chemistry 182 (2009) 807–812 Contents lists available at ScienceDirect Journal of Solid State Chemistry journal homepage: /locate/jssc Preparation and photocatalytic activity of high-efficiency visible-light- responsive photocatalyst SnSx/TiO2 Chongyin Yang, Wendeng Wang, Zhichao Shan, Fuqiang Huang State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR China a r t i c l e i n f o a b s t r a c t Article history: Visible-light-responsive composite photocatalysts SnS /TiO and SnS/TiO with different mass ratios 2 2 2 Received 26 August 2008 were prepared by in-situ synthesis technology in solution with commercial TiO2. The junction-based Received in revised form materials SnSx (x ¼ 1, 2)/TiO2 were found to have high visible-light photocatalytic performance and 14 December 2008 possess much better activity than the single-phase SnS or TiO . The greatly enhanced photocatalytic x 2 Accepted 17 December 2008 activity of the SnSx/TiO2 composites was mainly attributed to the matching band potentia