Photogenerated Cathodic Protection of Stainless Steel

Authors

Cheng-Gang LIN
Ze-Quan LIN
Jing LI
Chang-Jian LIN

Corresponding Author

Chang-Jian LIN(cjlin@xmu.edu.cn)

Abstract

A highly ordered Co-doped TiO2 nanotube layers were fabricated by potentiostatic anodization of pure titanium in fluorinated electrolyte solutions followed by ion-exchange method. The structure and composition of the as-prepared Co-doped TiO2 nanotube layers were characterized by SEM, XRD, UV-Vis, and XPS. The effects of dopant content on the morphologies, structural and photochemical properties of the TiO2 nanotube arrays were investigated. The performances of photogenerated cathodic protection and the photoelectrochemical response for the Co-doped TiO2 nanotube arrays under illumination and dark conditions were evaluated through the electrochemical measurements. The Co-doped TiO2 nanotubes showed a stronger absorption in the visible light range due to a low recombination of photogenerated hole-electron. The open-circuit potentials of 403 stainless steel coupled with the Co-doped TiO2 nanotube arrays shifted negatively under visible light irradiation. It was indicated that the Co-doped TiO2 nanotube arrays were able to provide an effective photogenerated cathodic protection for metals under regular sunlight conditions.

Graphical Abstract

Keywords

anodic oxidation, TiO2 nanotube, Co-doped, photocathodic protection, visible-light

DOI Link

https://doi.org/10.61558/2993-074X.2846

Publication Date

2011-08-28

Online Available Date

2011-06-22

Revised Date

2011-05-24

Received Date

2011-04-11

Recommended Citation

Cheng-Gang LIN, Ze-Quan LIN, Jing LI, Chang-Jian LIN. Photogenerated Cathodic Protection of Stainless Steel[J]. Journal of Electrochemistry, 2011 , 17(3): Article 13.
DOI: 10.61558/2993-074X.2846
Available at: https://jelectrochem.xmu.edu.cn/journal/vol17/iss3/13

References

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