溶胶-凝胶法制备改性TiO2纳米薄膜及其防腐蚀性能

doi:10.3866/PKU.WHXB201112163

物理化学学报 >> 2012, Vol. 28 >> Issue (02): 393-398.doi: 10.3866/PKU.WHXB201112163

溶胶-凝胶法制备改性TiO₂纳米薄膜及其防腐蚀性能

朱燕峰, 张娟, 张义永, 丁敏, 漆海清, 杜荣归, 林昌健

厦门大学化学化工学院化学系, 固体表面物理化学国家重点实验室, 福建厦门 361005

收稿日期:2011-08-22 修回日期:2011-12-09 发布日期:2012-01-11
通讯作者: 杜荣归 E-mail:rgdu@xmu.edu.cn
基金资助:
国家高技术研究发展计划项目(863) (2009AA03Z327)和国家自然科学基金(21073151 和21173177)资助

Anticorrosion Properties of Modified Nano-TiO₂ Films Prepared by Sol-Gel Method

ZHU Yan-Feng, ZHANG Juan, ZHANG Yi-Yong, DING Min, QI Hai-Qing, DU Rong-Gui, LIN Chang-Jian

State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received:2011-08-22 Revised:2011-12-09 Published:2012-01-11
Contact: DU Rong-Gui E-mail:rgdu@xmu.edu.cn
Supported by:
The project was supported by the National High-Tech Research and Development Program of China (863) (2009AA03Z327) and National Natural Science Foundation of China (21073151, 21173177).

摘要/Abstract

摘要： 应用溶胶-凝胶法和浸渍提拉技术在316L 不锈钢表面分别制备TiO₂纳米膜和B-Fe-Ce 改性的TiO₂纳米膜. 采用场发射扫描电子显微镜(FE-SEM)、原子力显微镜(AFM)、拉曼光谱法和能量分散谱(EDS)对薄膜进行表征, 通过电化学阻抗谱(EIS)和动电位阳极极化曲线的测试考察薄膜的耐蚀性及对不锈钢的保护性能. 结果表明: 两种纳米薄膜均含锐钛矿型的TiO₂纳米颗粒, 纯TiO₂纳米膜与改性后的纳米膜中颗粒直径分别约为15和10 nm. TiO₂/316L不锈钢和B-Fe-Ce-TiO₂/316L不锈钢膜电极浸泡在0.5 mol·L^-1 NaCl溶液后, 后者的电化学反应电阻较大, 动电位阳极极化曲线的稳定钝化区较宽, 击穿电位更高, 说明改性的纳米膜的耐蚀性及其保护性能更好.

关键词: TiO₂纳米膜, 溶胶-凝胶法, 316L不锈钢, 电化学阻抗谱

Abstract: TiO₂ and B-Fe-Ce-modified TiO₂ films were synthesized on the surfaces of 316L stainless steel (316L SS) substrates using a sol-gel and dip-coating method. The properties of the films were characterized by field emission scanning electron microscopy, atomic force microscopy, Raman spectroscopy and energy dispersive spectrometry. The corrosion resistance of the films and their ability to protect stainless steel were investigated by electrochemical impedance spectroscopy and potentiodynamic polarization curves. Both TiO₂ and B-Fe-Ce-modified TiO₂ films were composed of anatase nanoparticles about 15 and 10 nm in diameter, respectively. Impedance spectra of the stainless steel substrates coated TiO₂ films contained semicircles for capacitive reactance in 0.5 mol·L^-1 NaCl solution, but the charge transfer resistance of the B-Fe-Ce-TiO₂/316L SS electrode was higher than that of the TiO₂/316L SS electrode. The potentiodynamic anodic polarization curve of the B-Fe-Ce-TiO₂/316L SS electrode showed a larger stable passive region and a higher breakdown potential than the TiO₂/316L SS electrode, indicating that the modified film had better corrosion resistance and protective properties for 316L SS.

Key words: Nano-TiO₂ film, Sol-gel method, 316L stainless steel, Electrochemical impedance spectroscopy

朱燕峰, 张娟, 张义永, 丁敏, 漆海清, 杜荣归, 林昌健. 溶胶-凝胶法制备改性TiO₂纳米薄膜及其防腐蚀性能[J]. 物理化学学报, 2012, 28(02), 393-398. doi: 10.3866/PKU.WHXB201112163

ZHU Yan-Feng, ZHANG Juan, ZHANG Yi-Yong, DING Min, QI Hai-Qing, DU Rong-Gui, LIN Chang-Jian. Anticorrosion Properties of Modified Nano-TiO₂ Films Prepared by Sol-Gel Method[J]. Acta Phys. -Chim. Sin. 2012, 28(02), 393-398. doi: 10.3866/PKU.WHXB201112163

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201112163

https://www.whxb.pku.edu.cn/CN/Y2012/V28/I02/393

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溶胶-凝胶法制备改性TiO₂纳米薄膜及其防腐蚀性能

Anticorrosion Properties of Modified Nano-TiO₂ Films Prepared by Sol-Gel Method

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