Visible-light-driven photogenerated cathodic protection of stainless steel by liquid-phase-deposited TiO2 films

被引：49
作者：
Lei, Cai-Xia [1 ]
Feng, Zu-De [1 ]
Zhou, Han [1 ]
机构：
[1] Xiamen Univ, Fujian Prov Key Lab Adv Mat, Coll Mat, Xiamen 361005, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2012年 / 68卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Photogenerated cathodic protection; TiO2; films; Liquid-phase-deposition; NANOTUBE ARRAYS; CORROSION PROTECTION; ANATASE TIO2; PHOTOCATALYSIS; PHOTOANODES; COATINGS; 304-STAINLESS-STEEL; POWDERS;
D O I：
10.1016/j.electacta.2012.02.052
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The liquid-phase-deposition (LPD) method was developed to prepare N-F-codoped TiO2 films that served as photoanodes for the cathodic protection of SUS304 stainless steel (304SS). The as-prepared LPD-TiO2 films were characterized by scanning electron microscopy (SEM). X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Photoelectrochemical properties, such as open-circuit potential (OCP), photocurrent spectra, Tafel polarization curves and electrochemical impedance spectroscopy (EIS) of the LPD-TiO2 films, were also measured. The results indicate that the LPD-TiO2 films showed a visible-light response in the wavelength range of 600-750 nm. The photocurrent intensities in both the ultraviolet (UV)-light and visible-light regions were enhanced as the heat treatment (HT) temperature increased. However, the as-prepared LPD-TiO2 films exhibited the most negative photopotential under both visible-light and white-light illumination. In conclusion, the as-prepared LPD-TiO2 films would provide the most effective photogenerated cathodic protection of 304SS. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：134 / 140
页数：7
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