Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation

Jun Ma, Long Zhu Zhang, Yue Hua Wang*, Si Liang Lei, Xu Biao Luo, Su Hua Chen, Gui Sheng Zeng, Jian Ping Zou, Sheng Lian Luo, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)


The ζ-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%ζ-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the ζ-Bi2O3/Bi2MoO6 composites have been put forward.

Original languageEnglish
Pages (from-to)371-380
Number of pages10
JournalChemical Engineering Journal
Publication statusPublished - 1 Sep 2014

Scopus Subject Areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

User-Defined Keywords

  • Degradation
  • Persistent organic pollutants
  • Photocatalyst
  • Radicals


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