Sulfur doped anatase TiO2 single crystals with a high percentage of {0 0 1} facets

Journal of Colloid and Interface Science
Gang LiuHui-Ming Cheng

Abstract

Extending the response range of wide-bandgap (3.2 eV) anatase TiO(2) photocatalysts into the visible light range can play an important role in promoting the practical applications of photocatalysts. Here, we report a route to prepare sulfur doped anatase TiO(2) single crystal sheets with a high percentage of {0 0 1} facets. The resultant TiO(2) sheets were investigated by a combination of experimental characterizations and electronic structure calculations. The synthesized sulfur doped anatase samples show an additional visible light absorption band from 400 nm to ca. 550 nm and some visible-light photocatalytic activity in *OH radical generation and photodecomposition of organic dyes. The Ti-S bond structure causes not only visible light absorption but also changes to an extent the surface structures of doped anatase TiO(2) sheets. Theoretically, localized 3p states of S formed in the bandgap are implicated for the visible light absorption of the sulfur doped anatase TiO(2).

References

Sep 28, 2002·Science·Shahed U M KhanWilliam B Ingler
Jan 21, 2010·Chemical Communications : Chem Comm·Gang LiuHui-Ming Cheng
Jan 16, 2008·Nanotechnology·Gang LiuHui-Ming Cheng

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Citations

Mar 31, 2011·Chemical Communications : Chem Comm·Gang LiuHui-Ming Cheng
Jan 22, 2011·Journal of Colloid and Interface Science·Sihui ZhanYi Li
May 24, 2014·Chemical Reviews·Gang LiuHui-Ming Cheng
Sep 5, 2014·ACS Applied Materials & Interfaces·Lu-Lu LongHan-Qing Yu
Sep 20, 2012·Chemical Society Reviews·Xiaobo ChenSamuel S Mao
Jun 20, 2017·ACS Applied Materials & Interfaces·Chengzhi LuoChunxu Pan
Mar 21, 2013·Chemical Communications : Chem Comm·Wei JiaoHui-Ming Cheng
Mar 30, 2018·The Journal of Physical Chemistry. B·Stephane KenmoeEckhard Spohr

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