Layered Ag/Ag2O/BiPO4/Bi2WO6 heterostructures by two-step method for enhanced photocatalysis

Xiaohong Hu, Qiansu Ma, Xinlong Wang, Yingjun Yang, Na Liu, Cheng Zhang, Naoki Kawazoe, Guoping Chen, Yingnan Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Two-dimensionally layered structures are intriguing for the fundamental demand of opto-electronic devices and have broad applications due to their superior properties. In particular, layered heterostructures as promising materials in photocatalysis, have lots of active atoms exposed on the surface, which largely affect the photocatalytic performance. In this work, two-dimensional heterostructures were synthesized by a two-step hydrothermal method, in which monolayer BiPO4 chemically bonded on Bi2WO6 nano-sheets with Ag/Ag2O nanoparticles (BWO-AP). The two-step method significantly improved photocatalytic efficiency, compared with traditional one-step process. Compared to other controls, BWO-AP showed the highest quantum efficiency and photocatalytic performances for O2 revolution in distilled water and Rh B degradation. It was ascribed to its fast photoinduced charge separation and transfer. Interestingly, there also was some amount of H2 generated in distilled water, and the increased Ag0:Ag+ of BWO-AP after photocatalytic reaction could explain the consumption of photo-induced electrons from water splitting.

Original languageEnglish (US)
Pages (from-to)28-38
Number of pages11
JournalJournal of Catalysis
StatePublished - Jul 2020


  • Charge separation and transfer
  • Layered heterostructures
  • Photocatalysis
  • Two-step hydrothermal method
  • Water oxidation

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry


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