Promotion of Phenol Electro-oxidation by Oxygen Evolution Reaction on an Active Electrode for Efficient Pollution Control and Hydrogen Evolution

Qin Hehe; Wei Xiaojie; Ye ZiweiLiu XiangyunMao Shun

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Promotion of Phenol Electro-oxidation by Oxygen Evolution Reaction on an Active Electrode for Efficient Pollution Control and Hydrogen Evolution

机译：Promotion of Phenol Electro-oxidation by Oxygen Evolution Reaction on an Active Electrode for Efficient Pollution Control and Hydrogen Evolution

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We report an electrolysis system using NiFe layered double hydroxide/CoMoO4/nickel foam (NFLDH/CMO/NF) asthe anode and CMO/NF as the cathode for simultaneous phenolelectro-oxidation and water electrolysis. This system shows highperformance for both phenol degradation and hydrogen evolution.We demonstrate that the degradation rate of phenol on the activeanode is governed by the mass transfer rate at a low phenolconcentration (0.5-2 mM) and by the electro-oxidation rate at ahigh phenol concentration (5 mM). The anodic oxygen evolutionreaction (OER) can promote the phenol degradation throughenhanced mass transfer efficiency. More importantly, the commondeactivation issue of phenol electro-oxidation on the inert anodecan be eliminated by the high OER activity of the active anode. Theconstructed full electrolytic cell only needs a low potential of 1.498V to achieve 10 mA/cm2for water electrolysis. The reported promotion effect of phenol degradation by OER as well as theimproved anode resistance to deactivation offer new insights into efficient and robust waste-to-resource electrolysis system for water treatment.

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《Environmental Science & Technology: ES&T》 |2022年第9期|5753-5762|共10页
作者
Qin Hehe; Wei Xiaojie; Ye ZiweiLiu XiangyunMao Shun;
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作者单位

Tongji Univ;

Shanghai Inst Pollut Control & Ecol Secur;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
hybrid electrolyzer; phenol degradation; active anode; oxygen evolution reaction; hydrogen evolution reaction; WASTE-WATER TREATMENT; ELECTROCHEMICAL OXIDATION; ORGANIC POLLUTANTS; DEGRADATION; ELECTROCATALYSTS; MECHANISM; CATALYSTS; RECOVERY; SINGLE; SITES;

Promotion of Phenol Electro-oxidation by Oxygen Evolution Reaction on an Active Electrode for Efficient Pollution Control and Hydrogen Evolution

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