期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 570, 期 -, 页码 306-316出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2019.03.045
关键词
MoS2/TiO2 composites; Photocatalytic reduction of CO2; Stability; TiO2; narrowed band gap
资金
- National Natural Science Foundation of China [21546014, 51704003]
- Anhui province natural science research project [KJ2017A043]
The MoS2/TiO2 heterojunction composites photocatalysts exhibits excellent photocatalytic performance, and they were resoundingly synthesized by a one-step hydrothermal experimental method combined with mild calcination (300 degrees C) under an argon atmosphere. Under the visible light irradiation, the photocatalytic activity of MoS2/TiO2 heterojunction composites were tested for photocatalytic reduction of CO2 and it exhibited superior performance and stability. The consequences show that the pure MoS2 demonstrates a poor photocatalytic activity because of its high electron-hole recombination, and the maximum yields of CO and CH4 on 10% MoS2/TiO(2 )heterojunction composite are 268.97 mu mol/g.cat and 49.93 mu mol/g.cat, respectively, which are about 5.33 times and 16.26 times of pure TiO2 (P25). The improved photocatalytic activity of 10% MoS2/TiO(2 )heterojunction composite could be put down to the high-efficiency separation of photogenerated electron-hole pairs, strong response to visible light and the narrowed band gap.
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