Institutional Repository of Key Laboratory of Marine Environmental Corrosion and Bio-fouling, IOCAS
ZnPc/TiO2 composites for photocathodic protection of 304 stainless steel | |
Ning, Xiao-bo1,2,3; Wang, Xiu-tong1,3,4; Shao, Qian2; Ge, Sheng-song2; Chi, Li-feng1,3,4; Nan, You-bo1,3,4; Liang, Hao1,3,4; Hou, Bao-rong1,3,4 | |
2020-02-01 | |
发表期刊 | JOURNAL OF ELECTROANALYTICAL CHEMISTRY |
ISSN | 1572-6657 |
卷号 | 858页码:6 |
通讯作者 | Wang, Xiu-tong(wangxiutong@qdio.ac.cn) |
摘要 | ZnPc/TiO2 composites were synthesized by a drop-coating method and used as photoanodes for photocathodic protection to slow the corrosion of 304 stainless steel (304SS). TiO2 is a wide-band-gap (3.2 eV) conductor that only absorbs UV light with a wavelength <380 nm, and the recombination rate of photogenerated carriers in TiO2 is high. Zinc phthalocyanine (ZnPc) is a material with strong visible-light absorption. The combination of ZnPc and TiO2 can increase the absorption of visible light. Furthermore, the lowest unoccupied molecular orbital (LUMO) con-ductionband level of ZnPc is higher than that of TiO2; thus, the electrons in ZnPc excited by the light can migrate to the conduction band of TiO2, thereby accelerating the separation of electrons and holes. The results show that the visible-light absorption of the ZnPc./TiO2 composite is markedly improved compared with that of TiO2 alone. The open-circuit potential (OCP) of 304SS coupled with the ZnPc/TiO2 composite decreased substantially compared with that of 304SS coupled with pure TiO2, reaching approximately -700 mV. The proposed ZnPc/TiO2 composites offer superior photocathodic protection for 304SS. (C) 2019 Elsevier B.V. All rights reserved. |
关键词 | Photocathodic protection 304 stainless steel TiO2 ZnPc/TiO2 |
DOI | 10.1016/j.jelechem.2019.113802 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[41827805] ; Shandong Key Laboratory of Corrosion Science ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13040404] |
WOS研究方向 | Chemistry ; Electrochemistry |
WOS类目 | Chemistry, Analytical ; Electrochemistry |
WOS记录号 | WOS:000515205600041 |
出版者 | ELSEVIER SCIENCE SA |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/165626 |
专题 | 海洋环境腐蚀与生物污损重点实验室 |
通讯作者 | Wang, Xiu-tong |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Sh, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China |
第一作者单位 | 中国科学院海洋研究所 |
通讯作者单位 | 中国科学院海洋研究所; 中国科学院海洋大科学研究中心 |
推荐引用方式 GB/T 7714 | Ning, Xiao-bo,Wang, Xiu-tong,Shao, Qian,et al. ZnPc/TiO2 composites for photocathodic protection of 304 stainless steel[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2020,858:6. |
APA | Ning, Xiao-bo.,Wang, Xiu-tong.,Shao, Qian.,Ge, Sheng-song.,Chi, Li-feng.,...&Hou, Bao-rong.(2020).ZnPc/TiO2 composites for photocathodic protection of 304 stainless steel.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,858,6. |
MLA | Ning, Xiao-bo,et al."ZnPc/TiO2 composites for photocathodic protection of 304 stainless steel".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 858(2020):6. |
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