Affiliation:
1. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Luoyu Road 1037 Wuhan 430074 P. R. China
Abstract
AbstractPhotoelectrocatalysis (PEC) is regarded as a promising and sustainable process for removal of organic contaminants from wastewater. Meanwhile, enzymatic catalysis also provides an effective way to carry out polluted environment remediation under mild conditions. In this study, a biophotoelectrocatalytic (BPEC) system is designed to remove 4‐nitrophenol (4‐NP) based on a combination of PEC and enzymatic catalysis. The developed BPEC system is constructed with a Ag3PO4/BiVO4 photoanode and a horseradish peroxidase (HRP)‐loaded carbon cloth (CC) cathode. On the photoanode, the construction of a direct Z‐scheme Ag3PO4/BiVO4 heterojunction enhanced the separation efficiency of photogenerated carriers, which promoted the PEC degradation of 4‐NP under visible light irradiation. After HRP was immobilized on the cathode, the degradation efficiency of 4‐NP reached 97.1 % after 60 min PEC treatment. The result could be ascribed to the HRP‐catalyzed oxidation reaction via in situ‐generated H2O2 from the CC cathode during the PEC process. Moreover, the possible degradation pathways of 4‐NP in such a BPEC system are also discussed.
Subject
General Energy,General Materials Science,General Chemical Engineering,Environmental Chemistry
Cited by
5 articles.
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