纳米钛酸锶薄膜电极的组装及其对不锈钢的光电化学缓蚀性能

引用本文: 补钰煜, 李卫兵, 于建强, 王秀通, 齐梅玲, 聂孟言, 侯保荣. 纳米钛酸锶薄膜电极的组装及其对不锈钢的光电化学缓蚀性能[J]. 物理化学学报, 2011, 27(10): 2393-2399. doi: 10.3866/PKU.WHXB20110926 shu

Citation: BU Yu-Yu, LI Wei-Bing, YU Jian-Qiang, WANG Xiu-Tong, QI Mei-Ling, NIE Meng-Yan, HOU Bao-Rong. Fabrication of SrTiO₃ Nanocrystalline Film Photoelectrode and Its Photoelectrochemical Anticorrosion Properties for Stainless Steel[J]. Acta Physico-Chimica Sinica, 2011, 27(10): 2393-2399. doi: 10.3866/PKU.WHXB20110926 shu

纳米钛酸锶薄膜电极的组装及其对不锈钢的光电化学缓蚀性能

基金项目:
中国科学院知识创新工程领域前沿项目及国家自然科学基金(20973097)资助 (20973097)

摘要: 研究了在铟锡氧化物(ITO)导电玻璃上组装的纳米钛酸锶薄膜光电极在模拟日光照射下对不锈钢的抗腐蚀保护性能. 通过溶胶-凝胶法在添加和不添加十六烷基三甲基溴化铵(CTAB)表面活性剂的情况下制得了不同形貌的钛酸锶粉体. X射线衍射(XRD)和高分辨扫描电子显微镜(SEM)表征结果表明, 两种方法合成的钛酸锶均为钙钛矿型结构, 但添加CTAB后得到的钛酸锶颗粒分散均匀, 平均粒径为90 nm左右. 采用紫外-可见漫反射光谱对钛酸锶薄膜的光物理性质进行了研究, 发现其光吸收范围在紫外光区, 而且通过CTAB协助合成的钛酸锶在小于380 nm光区较非CTAB 协助合成的钛酸锶有更强的吸收. 以0.1 mol·L^-1 NaOH+0.2 mol·L^-1Na2S溶液为光电极反应的电解质, 测试了钛酸锶薄膜电极对304 不锈钢在0.5 mol·L^-1 的NaCl 腐蚀溶液中的光电化学缓蚀性能. 304不锈钢在CTAB改性钛酸锶薄膜光电化学保护或不保护条件下, 在0.5 mol·L^-1 NaCl+0.05 mol·L^-1 HCl腐蚀溶液中腐蚀6 h前后的表面金相图表明, 钛酸锶薄膜具有优异的光电化学抗腐蚀性能.

关键词:

English

Fabrication of SrTiO₃ Nanocrystalline Film Photoelectrode and Its Photoelectrochemical Anticorrosion Properties for Stainless Steel

1.
1. Faculty of Environment and Safety, Qingdao University of Science and Technology, Qingdao 266042, Shandong Province, P. R. China;
2. Key Laboratory of New Fiber Materials and Modern Textile, Qingdao University 266071, Shandong Province, P. R. China;
3. Institute of Oceanology, Chinese Academy of Science, Qingdao 266071, Shandong Province, P. R. China;
4. National Centre for Advanced Tribology at Southampton, School of Engineering Sciences, University of Southampton, Southampton, United Kingdom
Received Date: 02 June 2011
Available Online: 27 September 2011
Fund Project:
中国科学院知识创新工程领域前沿项目及国家自然科学基金(20973097)资助

Abstract: The photoelectrochemical properties of a SrTiO₃ film coated on an indium-tin oxide (ITO) conducting glass were investigated for the anticorrosion of 304 stainless steel (304SS) under solar light illumination. The SrTiO₃ nanocrystal powders were synthesized using a sol-gel process in the absence and presence of the cetyltrimethyl ammonium bromide (CTAB) surfactant and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was showed that the as-synthesized SrTiO₃ materials exhibit a single perovskite structure and the presence of CTAB leads to uniform particles with an average size of 90 nm. The UV-Vis diffuse reflectance analysis shows that both SrTiO₃ films that were prepared in the absence and presence of CTAB surfactant absorbs strongly in the UV region with an absorption threshold edge near 380 nm while the SiTiO3 prepared in the presence of CTAB exhibited a stronger absorption in the UV region than those in the absence of CTAB. The photo-electrochemical anticorrosion effects of SrTiO₃ on 304 stainless steel substrates in a 0.5 mol·L^-1 NaCl solution were investigated using a 0.1 mol·L^-1 NaOH and 0.2 mol·L^-1 Na₂S hole sacrifice electrolyte solution. Metallographic images of the 304 stainless steel before and after immersion in a 0.5 mol·L^-1 NaCl+0.05 mol·L^-1 HCl solution for 6 h demonstrates that the SrTiO₃ film coated photoelectrode exhibits excellent photoelectrochemical anticorrosion performance on 304 stainless steel.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

纳米钛酸锶薄膜电极的组装及其对不锈钢的光电化学缓蚀性能

English

Fabrication of SrTiO₃ Nanocrystalline Film Photoelectrode and Its Photoelectrochemical Anticorrosion Properties for Stainless Steel

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

纳米钛酸锶薄膜电极的组装及其对不锈钢的光电化学缓蚀性能

English

Fabrication of SrTiO3 Nanocrystalline Film Photoelectrode and Its Photoelectrochemical Anticorrosion Properties for Stainless Steel

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Fabrication of SrTiO₃ Nanocrystalline Film Photoelectrode and Its Photoelectrochemical Anticorrosion Properties for Stainless Steel

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs