Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 56, Issue -, Pages 236-243Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2020.03.039
Keywords
Sb2WO6; BiOBr; Photocatalytic; NO removal; S-scheme
Funding
- National Natural Science Foundation of China [51472194, 51602237]
- National Science Foundation of Hubei Province [2016CFA078]
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Photocatalysis technology is an efficient method for removing nitrogen oxides at low concentrations. Herein, dimension-matched Sb2WO6/BiOBr photocatalysts were synthesized at room temperature via precipitation-deposition way. Under visible light irradiation, the as-obtained Sb2WO6/BiOBr photocatalysts showed enhanced photocatalytic performance compare with the pure Sb2WO6 and BiOBr for removal of NO. The optimal ratio for photocatalytic performance of Sb2WO6/BiOBr composite was found to be 30 wt.% of Sb(2)WO(6)which showed excellent recycling property even after 5 runs. Moreover, in situ DRIFT was carried out to reveal the time-dependent evolution of reaction intermediates during photocatalytic NO oxidation. The probable photocatalytic mechanism was considered based on the active species capture experiments. The enhanced photocatalytic performance for the Sb2WO6/BiOBr composite photocatalyst perhaps is attributed to the interaction between BiOBr and Sb2WO6 and S-scheme charge transfer path. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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