期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 203, 期 -, 页码 870-878出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.10.083
关键词
Mn/TiO2/ZSM-5; Multi-functional photocatalyst; Vacuum UV irradiation; O-3 elimination and utilization; Benzene degradation
资金
- National Key Research and Development Program [2016YFC0204800]
- NSFC-RGC [51561165015, N_HKU718/15]
- Guangdong Applied Science and Technology Research & Development Fund [2015B020236004]
- Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme) [2016A050503022]
- Science and Technology Project in Guangzhou [2014Y2-00094]
- Key Fundamental Research Fund for the Central Universities [15lgjc07]
Vacuum ultraviolet (VUV) irradiation was used to improve photocatalytic degradation of gaseous benzene. A multi-functional photocatalyst of 0.1%Mn/TiO2/ZSM-5 was developed by a modified sol-gel method for the elimination and utilization of O-3, the by-product generated from VUV irradiation. O-3 was completely removed and efficiently used to enhance catalytic oxidation of benzene via ozone-assisted catalytic oxidation (OZCO). Under VUV irradiation, benzene removal efficiency was stably kept at 100% over 0.1%Mn/TiO2/ZSM-5, however, it was only about 50% and much O-3 was residual over commercial TiO2 (P25). 0.1%Mn/TiO2/ZSM-5 perfectly synergized with VUV irradiation. It provides more efficient pathways besides photocatalytic oxidation, for benzene degradation. The possible mechanism of benzene degradation over 0.1%Mn/TiO2/ZSM-5 with VUV irradiation was proposed. This is the first report of an efficient photocatalyst with superior performance for O-3 elimination and utilization. (C) 2016 Elsevier B.V. All rights reserved.
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