Fabrication and characterization of BiOxBry/BiOmIn coupled GCN heterojunctions with enhanced visible-light catalytic activity: Catalysis Communications

C.-S. Lu, Yu-Ju Lai, J. Shaya, Y.-Y. Lin, F.-Y. Liu, Jia-Hao Lin, C.-W. Chen, H.-Y. Tsai, J.-W. Huang, Chiing Chang Chen

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Abstract

We report the fabrication of bismuth oxybromide/bismuth oxyiodide coupled to graphitic carbon nitride heterojunctions via a simple hydrothermal method to circumvent fast recombination of photogenerated charge carriers of pure BiOX. The obtained BiOxBry/BiOmIn/GCN with varied ratios and synthetic conditions were stable and achieved significant enhancement in visible-light driven catalytic activities for degradation of crystal violet and 2-hydroxybenzoic acid. BB2I1–200–7-10%GCN heterojunction also showed selective reduction of carbon dioxide to methane under UV–vis irradiation with 0.018 μmol/g.h yield. The photocatalytic mechanism and major active species in crystal violet decomposition by BiOxBry/BiOmIn/GCN were investigated and proposed. © 2023 The Authors
Original languageBritish English
JournalCatal. Commun.
Volume184
DOIs
StatePublished - 2023

Keywords

  • 2-hydroxybenzoic acid
  • Bismuth oxybromide
  • Bismuth oxyiodide
  • CO<sub>2</sub> reduction
  • Crystal violet
  • g-C<sub>3</sub>N<sub>4</sub>
  • Photocatalysis
  • Bismuth compounds
  • Carbon dioxide
  • Carbon nitride
  • Catalyst activity
  • Fabrication
  • Photocatalytic activity
  • CO 2 reduction
  • Fabrication and characterizations
  • G-C3N4
  • Graphitic carbon nitrides
  • Hydroxybenzoic acids
  • Visible light
  • Heterojunctions

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