Investigation on the Kinetics of Heterogeneous Catalytic Ozone Decomposition in Aqueous Solution over Composite Iron-Manganese Silicate Oxide

Guoying Gao, Jing Kang, Jimin Shen, Zhonglin Chen, Wei Chu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

The kinetics of heterogeneous catalytic ozone decomposition in aqueous solution over composite iron-manganese silicate oxide (FMSO) was investigated. Results showed that the presence of FMSO significantly accelerated the ozone decomposition rate from 0.022 (without FMSO) to 0.101 min−1. The effects of inorganic anions and solution pH indicated that surface hydroxyl groups on FMSO were the active sites for catalyzing ozone decomposition and neutral charge surface seemed to show the highest catalytic performance. Tert-butanol inhibition experiments demonstrated that FMSO effectively accelerated the transformation rate of ozone into hydroxyl radicals. The contribution of hydroxyl radicals on ozone decomposition with and without FMSO was subsequently determined.
Original languageEnglish
Pages (from-to)434-442
Number of pages9
JournalOzone: Science and Engineering
Volume38
Issue number6
DOIs
Publication statusPublished - 1 Nov 2016

Keywords

  • Catalytic Ozone Decomposition
  • Composite Iron-Manganese Silicate Oxide
  • Hydroxyl Radical
  • Ozone
  • Surface Hydroxyl Groups

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry

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