F掺杂SrTiO3的制备及光电化学阴极保护性能研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (4): 707-713.

F掺杂SrTiO₃的制备及光电化学阴极保护性能研究

王建省¹, 孔存辉¹, 曾雄丰^1,2, 赵英娜^1,2

1.华北理工大学材料科学与工程学院,河北省无机非金属材料重点实验室,唐山 063210;
2.河北省(唐山)陶瓷产业技术研究院,唐山 063007

收稿日期:2023-11-09 出版日期:2024-04-15 发布日期:2024-04-19
通信作者: 赵英娜,博士,教授。E-mail:zhyn@ncst.edu.cn
作者简介:王建省(1985—),女,河北省人,博士。E-mail:wangjiansheng@ncst.edu.cn
基金资助:
河北省自然科学基金钢铁联合基金(E2021209002);唐山市科技局项目(22130215H,21130211D)

Preparation and Photoelectrochemical Cathodic Protection Properties of F-Doped SrTiO₃

WANG Jiansheng¹, KONG Cunhui¹, ZENG Xiongfeng^1,2, ZHAO Yingna^1,2

1. Province Key Laboratory of Inorganic Nonmetallic Materials, College of Material Science and Engineering, North China University of Science and Technology, Tangshang 063210, China;
2. Hebei (Tangshan) Ceramic Industry Technology Research Institute, Tangshang 063007, China

Received:2023-11-09 Online:2024-04-15 Published:2024-04-19

摘要/Abstract

摘要： SrTiO₃因合适的能带结构和稳定的物化特性,在光电化学阴极保护领域有很大的应用潜力,但是对太阳光的利用率低和光生电子-空穴对复合率高等问题限制了其进一步发展。基于此,利用阴离子(F)掺杂对SrTiO₃改性,以得到高效、稳定光电转换性能的SrTiO₃光阳极材料。通过溶剂热法制备了不同F掺杂浓度的SrTiO₃光阳极材料,UV-Vis DRS和PL测试结果表明,F掺杂提高了SrTiO₃对太阳光的利用率和光生电子-空穴对的分离能力。光电化学阴极保护测试结果表明:光照条件下,当F掺杂量为2.0%(原子数分数)时,F-2.0%-SrTiO₃与304不锈钢偶联后其光电流密度达到3.7 μA/cm²,使304不锈钢的开路电位负移至-0.42 V,在模拟海水中为304不锈钢提供有效保护。

关键词: SrTiO₃, F掺杂, 溶剂热法, 光电化学阴极保护, 光学性质

Abstract: SrTiO₃ has great potential for applications in the photoelectrochemical cathodic protection field due to its suitable band structure and stable recombination characteristics, but the low utilization of sunlight and high recombination rate of photogenerated electron-hole pairs limit its further development. Based on this, SrTiO₃ was modification by doping anion (F) in order to obtain a new kind of SrTiO₃ photoanode material with efficient and stable photoconversion performance. F-doped SrTiO₃ photoanodes with different F doping concentrations were prepared by solvent thermal method. UV-Vis DRS and fluorescence spectrometer test results show that F doping improves utilization of sunlight and separation ability of photogenerated electron-hole pairs. The photoelectrochemical cathodic protection results are as follows: when F doping concentration is 2.0% (atomic fraction), the photocurrent density of F-2.0%-SrTiO₃ coupled with 304 stainless steel reaches 3.7 μA/cm², and the open-circuit potential of 304 stainless steel negatively moves to -0.42 V under light conditions, showing an effective protection for 304 stainless steel in simulated seawater.

Key words: SrTiO₃, F doping, solvent thermal method, photoelectrochemical cathodic protection, optical property

中图分类号:

TB332

王建省, 孔存辉, 曾雄丰, 赵英娜. F掺杂SrTiO₃的制备及光电化学阴极保护性能研究[J]. 人工晶体学报, 2024, 53(4): 707-713.

WANG Jiansheng, KONG Cunhui, ZENG Xiongfeng, ZHAO Yingna. Preparation and Photoelectrochemical Cathodic Protection Properties of F-Doped SrTiO₃[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(4): 707-713.

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F掺杂SrTiO₃的制备及光电化学阴极保护性能研究

Preparation and Photoelectrochemical Cathodic Protection Properties of F-Doped SrTiO₃

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