Abstract
The Co3O4 decorated TiO2 nanotube arrays(NTAs) coatings are fabricated by the combination of anodization and impregnating methods. It is found that the introduction of Co3O4 can reduce the diffraction intensity of (101) plane of the TiO2 and accelerate the separation of photogenerated electron/hole pairs. In addition, the open circuit potential(OCP) and the corrosion potential of 304 stainless steel(304SS) with or without Co3O4 decorated TiO2 NTAs were measured under visible light, which indicated the 304SS coupled with Co3O4 decorated TiO2 NTAs had better anticorrosion performance than that of the 304SS or the 304SS coupled with pure TiO2 NTAs. The enhancement of the cathodic protection performance of the Co3O4 decorated TiO2 NTAs can be ascribed to the matched energy levels and strong interaction between Co3O4 and TiO2 NTAs, and the improvement of light absorption.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos.21875026, 21878031), the Revitalization Talents Program of China (No. XLYC1802124), the Liaoning BaiQianWan Talents Program, China, the Scientific Research Fund of the Educational Department of Liaoning Province, China(No. J2019013), the Joint Research Fund of Liaoning-Shenyang National Laboratory for Materials Science, China(No. 2019JH3/30100034).
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Li, W., Fang, X., Lyu, J. et al. Co3O4 Decorated Ti/TiO2 Nanotubes for Photogenerated Cathodic Protection of 304 Stainless Steel. Chem. Res. Chin. Univ. 37, 704–710 (2021). https://doi.org/10.1007/s40242-020-0226-8
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DOI: https://doi.org/10.1007/s40242-020-0226-8