Laccase-coupled photoelectrocatalytic system for highly efficient degradation of bisphenol A

Jinfeng Li; Yifan Ding; Jie Gao; Kai Yan; Jingdong Zhang

doi:10.1016/j.chemosphere.2022.136245

Laccase-coupled photoelectrocatalytic system for highly efficient degradation of bisphenol A

Chemosphere. 2022 Dec;308(Pt 1):136245. doi: 10.1016/j.chemosphere.2022.136245. Epub 2022 Aug 30.

Authors

Jinfeng Li¹, Yifan Ding¹, Jie Gao², Kai Yan³, Jingdong Zhang⁴

Affiliations

¹ MOE Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China.
² School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China.
³ MOE Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China. Electronic address: yank@hust.edu.cn.
⁴ MOE Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China. Electronic address: zhangjd@mail.hust.edu.cn.

PMID: 36055585
DOI: 10.1016/j.chemosphere.2022.136245

Abstract

In the present work, a hybrid advanced oxidation process that combined laccase with photoelectrocatalysis (PEC) was explored for highly efficient degradation of bisphenol A (BPA). Visible light-responsive BiVO₄ film electrode with good optical and photoelectrochemical properties was prepared via an electrodeposition method and employed as photoanode for PEC degradation of BPA. After laccase was facilely introduced into the PEC system, the BPA removal efficiency was significantly promoted, attributed to the synergistic effect of enzymatic catalysis and PEC processes. To obtain the optimum operation conditions, the effects of initial pH and applied bias potential were investigated systematically. Radicals trapping experiments revealed that •O₂^- dominated the biophotoelectrocatalytic degradation process, and the possible degradation pathway for BPA was proposed by identifying intermediates using liquid chromatography-mass spectrometry.

Keywords: BiVO(4) photoanode; Biophotoelectrocatalytic degradation; Bisphenol A degradation; Degradation pathway; Laccase.

MeSH terms

Benzhydryl Compounds*
Catalysis
Laccase* / metabolism
Phenols / chemistry

Substances

Benzhydryl Compounds
Phenols
Laccase
bisphenol A