水热法制备TiO2纳米线薄膜的光生阴极保护性能

doi:10.3866/PKU.WHXB20100913

物理化学学报 >> 2010, Vol. 26 >> Issue (09): 2349-2353.doi: 10.3866/PKU.WHXB20100913

水热法制备TiO₂纳米线薄膜的光生阴极保护性能

朱燕峰, 杜荣归, 李静, 漆海清, 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:2010-04-16 修回日期:2010-05-28 发布日期:2010-09-02
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专项(2009AA03Z327),国家科技支撑计划项目(2007BAB27B04)资助

Photogenerated Cathodic Protection Properties of a TiO₂ Nanowire FilmPrepared by a Hydrothermal Method

ZHU Yan-Feng, DU Rong-Gui, LI Jing, QI Hai-Qing, 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:2010-04-16 Revised:2010-05-28 Published:2010-09-02
Contact: DU Rong-Gui E-mail:rgdu@xmu.edu.cn
Supported by:
The project was supported by the National High Technology Research and Development Programof China (2009AA03Z327) and National Key Technology R&DProgramof China (2007BAB27B04).

摘要/Abstract

摘要：

应用水热法在钛箔表面制备TiO₂纳米线薄膜, 采用场发射扫描电子显微镜、X 射线衍射和紫外-可见分光光度法对薄膜进行表征, 用电极电位和电化学阻抗谱考察TiO₂光生阴极保护性能. 结果表明: 薄膜由纵横交错的锐钛矿型TiO₂纳米线组成, 纳米线的直径约10 nm. 在150 ℃下反应6 h生成的TiO₂ 纳米线薄膜在0.3 mol·L^-1 Na₂SO₄溶液和0.3 mol·L^-1 Na₂SO₄+0.5 mol·L^-1 HCOOH 混合溶液中对与TiO₂薄膜耦连的403 不锈钢均有良好的阴极保护效应. TiO₂膜所在溶液中含有HCOOH 时, 可使耦连的403不锈钢在0.5 mol·L-1 NaCl 溶液中电极电位负移约545 mV, 界面反应电阻显著变小, 表明电解质溶液加入HCOOH 可以增强TiO₂纳米线薄膜对 403 不锈钢的光生阴极保护效应.

关键词: 水热法, TiO₂纳米线薄膜, 光生阴极保护, 403 不锈钢

Abstract:

A TiO₂ film was synthesized on the surface of a Ti substrate by a hydrothermal method, followed by acid treatment and calcination. The properties of the TiO₂ film were characterized by scanning electron microscopy, X-ray diffraction, and ultraviolet-visible spectrophotometry. The photogenerated cathodic protection properties of the TiO₂ film were investigated by electrochemical techniques. The corrosion performance of 403 stainless steel coupled to a TiO2 film photoanode in different solutions was evaluated by photogenerated potential and electrochemical impedance spectroscopy. The results showed that the TiO2 film was composed of many randomly-oriented anatase nanowires of about 10 nm in diameter. The TiO₂ nanowire film prepared by the hydrothermal reaction at 150 ℃ for 6 h was used for the photogenerated cathodic protection of 403 stainless steel. When we coupled the steel in a 0.5 mol·L^-1 NaCl solution to the TiO₂ film photoanode in a mixed solution containing 0.3 mol·^-1 Na₂SO₄ and 0.5 mol·L^-1 HCOOH, its potential decreased by 545 mV. Additionally, the charge transfer resistance of the electrode reaction process for the coupled steel decreased considerably. The results also indicated that the HCOOH in the mixed solution improved the photogenerated cathodic protection of the TiO₂ filmphotoanode.

Key words: Hydrothermal method, TiO₂ nanowire film, Photogenerated cathodic protection, 403 stainless steel

朱燕峰, 杜荣归, 李静, 漆海清, 林昌健. 水热法制备TiO₂纳米线薄膜的光生阴极保护性能[J]. 物理化学学报, 2010, 26(09), 2349-2353. doi: 10.3866/PKU.WHXB20100913

ZHU Yan-Feng, DU Rong-Gui, LI Jing, QI Hai-Qing, LIN Chang-Jian. Photogenerated Cathodic Protection Properties of a TiO₂ Nanowire FilmPrepared by a Hydrothermal Method[J]. Acta Phys. -Chim. Sin. 2010, 26(09), 2349-2353. doi: 10.3866/PKU.WHXB20100913

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB20100913

https://www.whxb.pku.edu.cn/CN/Y2010/V26/I09/2349

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水热法制备TiO₂纳米线薄膜的光生阴极保护性能

Photogenerated Cathodic Protection Properties of a TiO₂ Nanowire FilmPrepared by a Hydrothermal Method

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