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
王建省 1孔存辉 1曾雄丰 2赵英娜2
作者信息
- 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. 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;河北省(唐山)陶瓷产业技术研究院,唐山 063007
- 折叠
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.
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％o-SrTiO3 coupled with 304 stainless steel reaches 3.7μA/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.
关键词
SrTiO3/F掺杂/溶剂热法/光电化学阴极保护/光学性质Key words
SrTiO3/F doping/solvent thermal method/photoelectrochemical cathodic protection/optical property引用本文复制引用
基金项目
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)
唐山市科技局项目(21130211D)
出版年
2024
国家科技期刊平台
NSTL
万方数据