Synergistic photocatalysis-catalytic peroxidation of BiOBr/H2O2 system for 4-chlorophenol degradation

Rujing Hou, Xiaofang Chen, Yuan Gao, Huijuan Zhu, Shiqing Li, Hexing Li, Yuning Huo

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

The synergistic BiOBr/H2O2 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 H2O2 molecular efficiently under visible light irradiations. Based on the trapping test, the main active species of ⋅O2 radicals in BiOBr/H2O2 system accelerated the efficient decomposition of H2O2 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/H2O2 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/H2O2 system, indicative of the potential practical application for the wastewater treatment.

Original languageEnglish
Pages (from-to)1000-1003
Number of pages4
JournalChemistrySelect
Volume1
Issue number5
DOIs
Publication statusPublished - 16 Apr 2016
Externally publishedYes

Keywords

  • BiOBr/H2O2 system
  • Degradation process
  • Stability
  • Visible-light photo-degradation

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