Enhanced photocatalytic CO2-reduction activity to form CO and CH4 on S-scheme heterostructured ZnFe2O4/Bi2MoO6 photocatalyst

Yipeng Zhou; Wenyu Jiao; Yu Xie; Fan He; Yun Ling; Qi Yang; Jinsheng Zhao; Hao Ye; Yang Hou

doi:10.1016/j.jcis.2021.10.053

Enhanced photocatalytic CO₂-reduction activity to form CO and CH₄ on S-scheme heterostructured ZnFe₂O₄/Bi₂MoO₆ photocatalyst

J Colloid Interface Sci. 2022 Feb 15;608(Pt 3):2213-2223. doi: 10.1016/j.jcis.2021.10.053. Epub 2021 Oct 15.

Authors

Yipeng Zhou¹, Wenyu Jiao¹, Yu Xie², Fan He³, Yun Ling¹, Qi Yang¹, Jinsheng Zhao⁴, Hao Ye¹, Yang Hou⁵

Affiliations

¹ College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China.
² College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China. Electronic address: [email protected].
³ Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou China.
⁴ Shandong Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, China. Electronic address: [email protected].
⁵ Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou China; School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China. Electronic address: [email protected].

PMID: 34753624
DOI: 10.1016/j.jcis.2021.10.053

Abstract

A novel ZnFe₂O₄/Bi₂MoO₆ heterojunction photocatalyst was synthesized by a facile solvothermal route. The incorporation of a narrow bandgap ZnFe₂O₄ photocatalyst can efficiently improve the range of light response and light absorption capacity of the Bi₂MoO₆ via the formation of a hybrid structure at the interface. The formed hybrid interface facilitates the separation efficiency of photo-generated carriers at ZnFe₂O₄/Bi₂MoO₆ heterojunction significantly. The experimental results confirm that ZnFe₂O₄/Bi₂MoO₆-20% heterojunction showed the highest photocatalytic efficiency for CO₂ reduction. Specifically, the total product yield of 47.1 μmol g^-1 under 5 h simulated sunlight irradiation is measured in the counterparts of pure ZnFe₂O₄ (14.79 μmol g^-1) and pure Bi₂MoO₆ (19.01 μmol g^-1). Indeed, the formation of ZnFe₂O₄/Bi₂MoO₆ heterojunction improved the photocatalytic efficiency for CO₂ reduction.

Keywords: CO(2) reduction; Heterojunction; Photocatalysis; ZnFe(2)O(4)/Bi(2)MoO(6).