TiO_2纳米管阵列的制备及其对316不锈钢光生阴极保护作用的研究

电化学（中英文） ›› 2007, Vol. 13 ›› Issue (4): 367-371.

TiO_2纳米管阵列的制备及其对316不锈钢光生阴极保护作用的研究

李静;云虹;林昌健;

固体表面物理化学国家重点实验室厦门大学化学系,固体表面物理化学国家重点实验室厦门大学化学系,固体表面物理化学国家重点实验室厦门大学化学系福建厦门361005,福建厦门361005,福建厦门361005

收稿日期:2007-11-28 修回日期:2007-11-28 出版日期:2007-11-28 发布日期:2007-11-28

Preparation and Investigations on the TiO2Nanotube Arrays for Cathodic Protection of 316L Stainless Steel

LI Jing,YUN Hong,LIN Chang-jian

(State Key Laboratory for Physical Chemistry of Solid Surfaces,Department of Chemistry,Xiamen University,Xiamen 361005,Fujian,China

Received:2007-11-28 Revised:2007-11-28 Published:2007-11-28 Online:2007-11-28

摘要/Abstract

摘要： 应用直接电化学阳极氧化法,于含氟电解液中,在纯钛表面制备一层整齐有序的TiO2纳米管阵列.扫描电子显微镜(SEM),X射线衍射(XRD)表征该纳米管阵列的形貌及晶体结构,光电化学联用系统研究其光电响应特性及对316L的光生阴极保护作用.结果表明:以TiO2纳米管阵列膜作为光生阳极时,在紫外光区(λ<387nm)有显著增强的光生电流响应,并对316不锈钢有较好的光生阴极保护作用.暗态下,光生电极电位仍可维持较长的一段时间,继续起到阴极保护作用.

关键词: 阳极氧化, 氧化钛纳米管, 光生阴极保护, 机理

Abstract: A highly ordered TiO2nanotube layer was fabricated by potentiostatic anodization of pure titanium in fluorinated electrolyte solutions.The structure and composition of the as-prepared TiO2 nanotubes were characterized by SEM and XRD.The TiO2 nanotubes show a stronger absorption in the ultraviolet(UV) light range.The performances of photogenerated cathodic protection and the photoelectrochemical response for the TiO2 nanotube layers under illumination and dark conditions were evaluated through the electrochemical measurements.It is found that the open-circuit potentials of 316 SS coupled with the TiO2 nanotubes layers shift negatively under UV light irradiation(λ<380nm).It is indicated that the TiO2 nanotubes arrays are able to function effectively a photogenerated cathodic protection for metals under light illumination and keep the cathodic protection for a long time under dark conditions.

Key words: anodic oxidization, TiO2nanotube, photocathodic protection, UV light, mechanism

中图分类号:

李静, 云虹, 林昌健, . TiO_2纳米管阵列的制备及其对316不锈钢光生阴极保护作用的研究[J]. 电化学（中英文）, 2007, 13(4): 367-371.

LI Jing, YUN Hong, LIN Chang-jian. Preparation and Investigations on the TiO2Nanotube Arrays for Cathodic Protection of 316L Stainless Steel[J]. Journal of Electrochemistry, 2007, 13(4): 367-371.

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https://electrochem.xmu.edu.cn/CN/Y2007/V13/I4/367

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