J. Mater. Sci. Technol. ›› 2021, Vol. 77: 117-125.DOI: 10.1016/j.jmst.2020.09.051

• Research Article • Previous Articles     Next Articles

All-solid-state Z-scheme BiVO4-Bi6O6(OH)3(NO3)3 heterostructure with prolonging electron-hole lifetime for enhanced photocatalytic hydrogen and oxygen evolution

Wuyou Wanga, Xuewen Wanga,*(), Lei Gana, Xinfei Jia, Zili Wub, Rongbin Zhanga,*()   

  1. aKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, the College of Chemistry, Nanchang University, Nanchang 330031, China
    bCenter for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge 37831, USA
  • Received:2020-08-31 Revised:2020-09-18 Accepted:2020-09-19 Published:2021-06-30 Online:2020-11-20
  • Contact: Xuewen Wang,Rongbin Zhang
  • About author:rbzhang@ncu.edu.cn (R. Zhang).
    * E-mail addresses: wangxuewen@ncu.edu.cn (X. Wang),

Abstract:

As a visible-light response photocatalyst, BiVO4 is widely used in photocatalytic oxygen evolution. In this study, a novel BiVO4-Bi6O6(OH)3(NO3)3 (BBN) heterostructure fabricates via a simple one-pot hydrothermal approach is certified to effectively restrain the recombination of carriers by efficient spatial charge separation. By employing BBN as a reductive-function photocatalyst, a solid-state Z-scheme is constructed to improve the photo-redox capacity of BiVO4 and hydrogen production is realized in the BiVO4-BBN heterostructure for the first time. The solid-state Z-scheme introduced in the BiVO4-BBN ensures the photoexcited carriers with the powerful redox capacity to participate in the photocatalytic reaction.

Key words: Photocatalysis, BiVO4-BBN, Solid-state Z-scheme, Hydrogen, Oxygen