Synergistic Photocatalysis‐Catalytic Peroxidation of BiOBr/H2O2 System for 4‐Chlorophenol Degradation. Issue 5 (26th April 2016)

• Record Type: Journal Article
• Authors: Hou, Rujing; Chen, Xiaofang; Gao, Yuan; Zhu, Huijuan; Li, Shiqing; Li, Hexing; Huo, Yuning
• Is Part Of: ChemistrySelect. Volume 1:Issue 5(2016)
• Page Start: 1000
• Page End: 1003
• Publication Date: 2016-04-26
• Subjects: BiOBr/H2O2 system -- Visible-light photo-degradation -- Degradation process -- Stability; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201600183
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The synergistic BiOBr/H2 O2 system was developed to improve the visible‐light photo‐degradation activity of 4‐chlorophenol (4‐CP). It was demonstrated that the BiOBr catalyst could decompose H2 O2 molecular efficiently under visible light irradiations. Based on the trapping test, the main active species of ⋅O2 − radicals in BiOBr/H2 O2 system accelerated the efficient decomposition of H2 O2 to form the ⋅OH radicals, which further reacted with the 4‐CP. In comparison, the photo‐induced holes were the main active species during the photo‐degradation of 4‐CP on the single BiOBr catalyst. Furthermore, the intermediate of both benzoquinone and hydroquinone during the 4‐CP photo‐degradation in the BiOBr/H2 O2 system, was determined by the HPLC‐MS measurement, which was followed by the final decomposition to CO2 . In addition, the high crystallization resulted in the stability of BiOBr in the BiOBr/H2 O2 system, indicative of the potential practical application for the wastewater treatment. Abstract : The synergistic BiOBr/H2 O2 system was developed to improve the visible‐light photo‐degradation activity of 4‐chlorophenol (4‐CP). The main active species of ⋅O2 − radicals in BiOBr/H2 O2 system accelerated the efficient decomposition of H2 O2 to form the ⋅OH radicals, which further reacted with the 4‐CP. The intermediate of both benzoquinone and hydroquinone was determined, which was followed by the final decomposition to CO2 .