Institutional Repository of Key Laboratory of Marine Environmental Corrosion and Bio-fouling, IOCAS
| Direct Z-scheme MgIn2S4/TiO2 heterojunction for enhanced photocathodic protection of metals under visible light | |
Li, Hong1,2 ; Cui, Xingqiang1,2; Song, Weizhe1,2; Yang, Zhanyuan1,2; Li, Yanhui1,2; Zhang, Pengfei1; Zheng, Zongmin2,3; Wang, Yuqi1,2; Li, Junru1; Ma, Fubin4,5
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| 2022-04-16 | |
| Source Publication | NANOTECHNOLOGY
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| ISSN | 0957-4484 |
| Volume | 33Issue:16Pages:14 |
| Corresponding Author | Li, Hong(lhqdio1987@163.com) |
| Abstract | 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. |
| Keyword | TiO2 MgIn2S4 photocathodic protection Z-scheme ESR |
| DOI | 10.1088/1361-6528/ac493c |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000750004400001 |
| Publisher | IOP Publishing Ltd |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/177939 |
| Collection | 海洋环境腐蚀与与生物污损重点实验室 |
| Corresponding Author | Li, Hong |
| Affiliation | 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 |
| Recommended Citation 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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