Photoelectrochemical effect of Cu_(2)O on the corrosion behavior of Cu in sodium sulfate solution  

作　　者：Jiarun Li Feng Qian Chongqing Guo Ning Wang Zhuoyuan Chen Lei Wang 

机构地区：[1]School of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [3]School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,China

出　　处：《Journal of Materials Science & Technology》2023年第29期46-54,共9页材料科学技术（英文版）

基　　金：the Natural Science Foundation of Shandong(No.ZR2021MD002);the National Natural Science Foun-dation of China(Nos.41576114,42106051,and U2106206).

摘　　要：The electrochemical associated with photoelectrochemical behaviors of Cu electrodeposited with Cu_(2)O layer were investigated in this work.The corrosion of Cu was promoted due to the enhanced anodic and cathodic processes under AM 1.5illumination compared with that in the darkness,especially for the anodic process.The photoinduced corrosion of Cu by Cu_(2)O was detected by Scanning Vibrating Electro Technique(SVET).The effect of Cu_(2)O on the promotion of Cu corrosion under illumination can be as-cribed to the narrowed depletion layer in Cu_(2)O under illumination,which facilitates the separation of hole-electron pairs.The resultant holes give rise to the oxidation of the Cu matrix and lead to a pro-moted corrosion consequently.Besides,a method for in-situ determining the photoinduced current of a semiconductor material is proposed.

关 键 词：Photoinduced corrosion Cu_(2)O Copper SVET P-type semiconductor 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TM91[金属学及工艺—金属材料]