Preparation and photocatalytic activity of high-efficiency visible-light-responsive photocatalyst SnS{sub x}/TiO{sub 2}

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2008.12.018· OSTI ID:21370341

Chongyin, Yang; Wendeng, Wang; Zhichao, Shan ^[1]

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1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)

Visible-light-responsive composite photocatalysts SnS{sub 2}/TiO{sub 2} and SnS/TiO{sub 2} with different mass ratios were prepared by in-situ synthesis technology in solution with commercial TiO{sub 2}. The junction-based materials SnS{sub x} (x=1, 2)/TiO{sub 2} were found to have high visible-light photocatalytic performance and possess much better activity than the single-phase SnS{sub x} or TiO{sub 2}. The greatly enhanced photocatalytic activity of the SnS{sub x}/TiO{sub 2} composites was mainly attributed to the matching band potentials and efficient charge transfer and separation at the tight-bonding interface between SnS{sub x} and TiO{sub 2}. The fact was confirmed by the comparison of photocatalytic activities of the SnS{sub 2}/TiO{sub 2} samples prepared by physical mixing method and in-situ synthesis technique. - Graphical Abstract: Visible-light-responsive composite photocatalysts SnS{sub 2}/TiO{sub 2} and SnS/TiO{sub 2} with different mass ratios were prepared by in-situ synthesis technology in solution with commercial TiO{sub 2}. The photocatalysts SnS{sub x} (x=1, 2) and SnS{sub x}/TiO{sub 2} possess excellent photocatalytic activities. The greatly enhanced photocatalytic activity of the SnS{sub x}/TiO{sub 2} composites was mainly attributed to the matching band potentials and efficient charge transfer and separation at the tight-bonding interface between SnS{sub x} and TiO{sub 2}.

• OSTI ID: 21370341
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

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