CuInS_2/TiO_2 heterojunction with elevated photo-electrochemical performance for cathodic protection

IOCAS-IR

	CuInS_2/TiO_2 heterojunction with elevated photo-electrochemical performance for cathodic protection
	Juan Liu ; Ning Wang ; Fuwei Zheng ; Chuanxing Wang ; Jing Wang ; Baorong Hou ; Qianyu Zhao ; Yanli Ning ; Yiteng Hu
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
	2022-09-20
出版年	2022
卷号	v.122 期号:27 页码:213-220
文献类型	CNKI期刊论文
摘要	Semiconductor quantum dots with high quantum yield and photovoltaic conversion efficiency have ushered in a brilliant moment for constructing internal electric field heterojunctions for photogenerated cathodic protection applications. In this paper, TiO_2nanotubes grown vertically on the surface of titanium substrates were modified via a combination of conventional electrochemical oxidation and a one-step solvothermal pathway to sensitize with CuInS_2quantum dots. Compared with pure TiO_2photoelectrodes,the modification improves sunlight absorption efficiency and provides photoelectron cathodic protection to the 304 stainless steel(304 SS). Through 9 h solvothermal reaction, the CuInS_2/TiO_2coupled with protected 304 SS exhibited an excellent property when the simulated sunlight irradiation. Its mixed open circuit potential is negatively shifted to-0.99 V, at the mean time with a stable photocurrent density(118 μA cm~(-2)). The results indicate that CuInS_2and TiO_2established a p-n heterojunction with wellmatched energy level, which can effectively facilitate the carrier separation and retain the strong redox capbility of photo-induced electrons and holes.
关键词	CuInS_2/TiO_2 photoanode p-n heterojunction Cathodic protection Photoelectric conversion efficiency
CNKI专辑号	B;
CNKI专辑名称	工程科技Ⅰ辑;
CNKI专题号	B022;
CNKI专题名称	金属学及金属工艺;
分类号	TG174.41
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	supported by the National Natural Science Foundation of China (Nos. 42106051, U2106206, U1706225, 42006046, 2019YFC0312103)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187322
专题	中国科学院海洋研究所
作者单位	1.CollegeofChemicalEngineering,QingdaoUniversityofScienceandTechnology 2.CASKeyLaboratoryofMarineEnvironmentalCorrosionandBio-Fouling,InstituteofOceanology,ChineseAcademyofSciences 3.PilotNationalLaboratoryforMarineScienceandTechnology,OpenStudioforMarineCorrosionandProtection 4.CenterforOceanMega-Science,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	Juan Liu,Ning Wang,Fuwei Zheng,et al. CuInS_2/TiO_2 heterojunction with elevated photo-electrochemical performance for cathodic protection. 2022.