期刊
MATERIALS RESEARCH BULLETIN
卷 87, 期 -, 页码 20-26出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2016.11.014
关键词
S-doped TiO2; TiS2; Visible light; Photocatalytic; Low-temperature
资金
- National Natural Science Foundation of China [61434002, 51571135]
- US NSF [DMR-1104994, CBET-1510121]
- Shanxi scholars program [[2012]12]
- One Hundred Talented People of Shanxi Province
- Shanxi Province Foundations [[2013]9]
Sulfur-doped anatase TiO2 nanoparticles with sulfur atoms occupying oxygen sites were realized by low temperature hydrothermal oxidation of titanium disulfide (TiS2) with deionized water as the solvent. S doping can effectively narrow the bandgap of TiO2 due to the fact that S 3p level is higher than O 2p orbital. The large surface area caused by this doping method induces higher photocatalytic activity in the visible regime compared with S-TiO2 oxidized at high temperature. The low-temperature hydrothermal oxidation of TiS2 in pH neutral solvent is an environmental-friendly method to obtain S-TiO2 with high photocatalytic activity, which can be extended to other nonmetal doping of TiO2 or other semiconductors for bandgap engineering. (C) 2016 Elsevier Ltd. All rights reserved.
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