Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated Bi2WO6 under visible light

Yangqing Liu, Changjun Zhu, Jingwen Sun, Yan Ge, Fujiao Song, Guanzhong Wang, Qi Xu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A series of CQDs/Bi2WO6 (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine Bi2WO6. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different. These CBW materials performed superior activities to the pristine Bi2WO6 in the photodegradation of VOCs under visible light, among which the CBW-2 demonstrated the best activity of almost complete degradation within only 120 min. Moreover, the CBW-2 exhibited high stability and reusability after five cycles.

Original languageEnglish
Pages (from-to)25949-25958
Number of pages10
JournalEnvironmental Science and Pollution Research
Volume28
Issue number20
DOIs
StatePublished - 1 May 2021
Externally publishedYes

Keywords

  • BiWO
  • CQDs
  • Photocatalysis
  • VOCs
  • Visible light

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

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