Fabrication of three-dimensional WO3/ZnWO4/ZnO multiphase heterojunction system with electron storage capability for significantly enhanced photoinduced cathodic protection performance

Chang Feng ¹Zhuoyuan Chen ²Jing Tian ¹Jiangping Jing ²Li Ma ³Jian Hou³

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作者信息

1. Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China
2. Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China
3. State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China
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Abstract

A novel three-dimensional hierarchical WO3 photoelectrode was prepared by solvothermal method,and ZnO was deposited on its surface by electrochemical method.The WO3/ZnWO4/ZnO multiphase-heterojunction photoelectrode was prepared by further annealing treatment to explore the photoinduced cathodic protection (CP) performance.Compared with WO3 and ZnO,the photoinduced CP and electron storage capacity performance of WO3/ZnWO4/ZnO is significantly improved in 3.5％ NaCl solution without adding any hole scavenger.The electron storage capacity of the WO3/ZnWO4/ZnO heterojunction makes it possible to continuously protect metallic materials in the dark after switching off the light,which can realize long-term and effective photoinduced CP.

Key words

WO3/ZnWO4/ZnO/Multiphase-heterojunction photoelectrode/Three-dimensional hierarchical structure/Photoinduced cathodic protection/Electron storage capacity

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基金项目

National Natural Science Foundation of China(41976036)

State Key Lab-oratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute (LSMRI)(KF190408)

State Key Lab-oratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute (LSMRI)(KF190404)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量68

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