Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light

doi:10.1088/1361-6528/ac493c

	Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light
	Li, Hong1,2 ; Cui, Xingqiang 1,2; Song, Weizhe 1,2; Yang, Zhanyuan 1,2; Li, Yanhui1,2 ; Zhang, Pengfei 1; Zheng, Zongmin 2,3; Wang, Yuqi 1,2; Li, Junru 1; Ma, Fubin4,5
	2022-04-16
发表期刊	NANOTECHNOLOGY
ISSN	0957-4484
卷号	33 期号:16 页码:14
通讯作者	Li, Hong([email protected])
摘要	To improve the photocathodic protection performance of traditional TiO2 photoanodes for metals, constructing a Z-scheme heterojunction is one of the most promising and creative strategies. Herein, we fabricated a novel Z-scheme MgIn2S4 nanosheets/TiO2 nanotube nanocomposite through anodization and hydrothermal method. The optimized Z-scheme MgIn2S4/TiO2 nanocomposites exhibited stronger visible light absorption, higher separation efficiency of photoelectrons and photocathodic protection performances in comparison to pure TiO2. The theoretical analysis and experimental results show that the Z-scheme heterojunction and oxygen vacancies jointly improved the separation efficiency of photogenerated electron-hole pairs and visible light absorption capacity, thereby improving the photoelectric conversion performance of the MgIn2S4/TiO2 nanocomposites. Furthermore, the influence of the precursor solution concentration on the photocathodic protection performances of the composites was investigated. As a result, when the concentration of magnesium source in the precursor solution was 0.06 mmol, the prepared MgIn2S4/TiO2-0.06 displayed the best photocathodic protection performance. In addition, the hydroxyl radicals (center dot OH) generated in the electron spin resonance (ESR) experiment verified the Z-scheme heterojunction mechanism of the MgIn2S4/TiO2 composite, and also demonstrated the excellent redox performance of the composite. This work provides valuable reference for the construction of high-performance Z-scheme heterojunctions for photocathode protection of metals.
关键词	TiO2 MgIn2S4 photocathodic protection Z-scheme ESR
DOI	10.1088/1361-6528/ac493c
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51801109]; National Natural Science Foundation of China[21805146]; Science and Technology Support Plan for Youth Innovation of Colleges in Shandong Province[DC2000000891]; Key Research and Development Public Welfare Program of Shandong Province[2019GGX102086]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000750004400001
出版者	IOP Publishing Ltd
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177939
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Li, Hong
作者单位	1.Qingdao Univ, Coll Mech & Elect Engn, 308 Ningxia Rd, Qingdao 266071, Peoples R China 2.Qingdao Univ, State Key Lab Biofibers & Ecotext, 308 Ningxia Rd, Qingdao 266071, Peoples R China 3.Qingdao Univ, Natl Engn Res Ctr Intelligent Elect Vehicle Power, 308 Ningxia Rd, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Li, Hong,Cui, Xingqiang,Song, Weizhe,et al. Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light[J]. NANOTECHNOLOGY,2022,33(16):14.
APA	Li, Hong.,Cui, Xingqiang.,Song, Weizhe.,Yang, Zhanyuan.,Li, Yanhui.,...&Ma, Fubin.(2022).Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light.NANOTECHNOLOGY,33(16),14.
MLA	Li, Hong,et al."Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light".NANOTECHNOLOGY 33.16(2022):14.

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