Coupling of photodegradation of RhB with photoreduction of CO2 over rGO/SrTi0.95Fe0.05O3−Δ catalyst: A strategy for one-pot conversion of organic pollutants to methanol and ethanol

Wen Hua Dong, Dan Dan Wu, Jin Min Luo, Qiu Ju Xing, Hui Liu, Jian Ping Zou*, Xu Biao Luo, Xiao Bo Min, Hui Long Liu, Sheng Lian Luo, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

For the first time, a novel strategy is developed to couple photocatalytic oxidation with photocatalytic reduction to achieve one-pot conversion of rhodamine (RhB) to methanol and ethanol by using rGO/SrTi0.95Fe0.05O3−δ photocatalyst. In the approach, RhB was photocatalytically degraded to CO2 and water, and then the as-obtained CO2 was converted into CH3OH and C2H5OH by means of photocatalytic reduction under simulated sunlight irradiation. Photocatalytic experimental results show the 1%rGO/SrTi0.95Fe0.05O3−δ has the best photocatalytic activity among the as-prepared catalysts and the corresponding product rate of CH3OH and C2H5OH is 10.76 and 6.14 μmol g−1 h−1, respectively, with a 1.53% apparent quantum efficiency. Furthermore, a photocatalytic mechanism was proposed to explain the detailed process of one-pot conversion of RhB into hydrocarbons. The present work gives a good example to combine the photodegradation of RhB with photoreduction of CO2 and proposes a new method to simultaneously tackle the problems of environmental pollution and energy crisis.

Original languageEnglish
Pages (from-to)218-225
Number of pages8
JournalJournal of Catalysis
Volume349
DOIs
Publication statusPublished - 2017

Scopus Subject Areas

  • Catalysis
  • Physical and Theoretical Chemistry

User-Defined Keywords

  • CO
  • Photocatalysis
  • Photocatalytic oxidation
  • Photoreduction
  • RhB

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