Fabrication of 1D/2D BiPO4/g-C3N4 heterostructured photocatalyst with enhanced photocatalytic efficiency for NO removal

Xiaotian Wang; Yuyu Ren; Yuan Li; Gaoke Zhang

doi:10.1016/j.chemosphere.2021.132098

Fabrication of 1D/2D BiPO₄/g-C₃N₄ heterostructured photocatalyst with enhanced photocatalytic efficiency for NO removal

Chemosphere. 2022 Jan;287(Pt 2):132098. doi: 10.1016/j.chemosphere.2021.132098. Epub 2021 Aug 31.

Authors

Xiaotian Wang¹, Yuyu Ren¹, Yuan Li¹, Gaoke Zhang²

Affiliations

¹ Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Shenzhen Research Institute, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, People's Republic of China.
² Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Shenzhen Research Institute, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, People's Republic of China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China. Electronic address: gkzhang@whut.edu.cn.

PMID: 34509004
DOI: 10.1016/j.chemosphere.2021.132098

Abstract

The visible light photocatalytic removal of NO in air is a promising way. BiPO₄ is restricted by its wide band gap and can only be responded to ultraviolet light. Herein, 1D BiPO₄ nanorod/2D g-C₃N₄ heterostructured photocatalyst was successfully synthesized via a facile one-step hydrothermal process for efficient visible light photocatalytic removal of NO. With simulated sunlight irradiation, the photocatalytic NO removal activity of the BiPO₄/g-C₃N₄ (64%) is much higher than that of the pure BiPO₄ (7.2%) and g-C₃N₄ (50%). Its excellent photocatalytic performance was ascribed to broadening the light response range to visible light and boosting the separation and transfer of photogenerated electrons and holes. The NO photocatalytic removal mechanism was proposed by the free radical trapping experiment and in situ DRIFTS research. The present study might induce a new means to design BiPO₄-based heterostructured photocatalysts for the removal of NO from air pollution under simulated solar light irradiation.

Keywords: BiPO(4); G-C(3)N(4); Heterostructured photocatalysts; In situ DRIFTS; NO removal.

MeSH terms

Catalysis
Electrons
Light*
Nanotubes*