首页|Enhanced electrochemical oxidation of perfluorooctanoic acid on Ti/SnO2-Sb electrode by surface morphology regulation

Enhanced electrochemical oxidation of perfluorooctanoic acid on Ti/SnO2-Sb electrode by surface morphology regulation

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Electrochemical oxidation is an effective method to degrade persistent organic pollutants.However,due to the limited catalytic activity of traditional thin film electrodes,the anodic oxidation process is slow and usually requires high energy consumption.Herein,Ti/SnO2-Sb electrode with regulated surface structure was reported to enhance the performance for electrochemical oxidation of persistent organic pollutants.The electrode deposited with SnO2-Sb nanoneedles(Ti/N-SnO2-Sb)showed higher oxidation activity.Its kinetic constant for perfluorooctanoic acid(PFOA)oxidation was 2.0 h-1 and the total organic carbon removal rate was 81.7％(4 h)at a relatively low current density of 6 mA/cm2.Compared with Ti/SnO2-Sb thin film and nanoparticles,Ti/N-SnO2-Sb significantly improved the electrochemical active area and'OH yield,and simultaneously reduced the electron transfer resistance,which enabled it to oxidize PFOA more rapidly even at a lower potential.This work provides a new strategy for promoting the electrochemical oxidation performance.

Electrochemical oxidationNanoneedle SnO2-SbPerfluoroalkyl compoundsElectrochemical degradationPersistent organic pollutants

Kaiqiang Hou、Genwang Zhu、Yujie Feng、Yanming Liu、Xie Quan

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Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education,China),School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China

State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin 150090,China

Liaoning Revitalization Talents Program国家自然科学基金国家自然科学基金Open Project of State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology

XLYC20070692207601922222601HC201705

2024

10.1016/j.cclet.2023.108704

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(3)
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