Synthesis and Photocathodic Protection Properties of Nanostructured SnS/TiO2 Composites

SnS/TiO2 nanocomposites were successfully fabricated by a successive ionic layer adsorption and reaction process. The effect of the material concentration on the preparation of the SnS/TiO2 composite films was discussed. TiO2 nanotube arrays co-sensitized with SnS nanoparticles were used as a photoa...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2018-01, Vol.165 (10), p.H601-H606
Main Authors: Shao, Jing, Zhang, Zhao-De, Wang, Xiu-Tong, Zhao, Xiao-Dong, Ning, Xiao-Bo, Lei, Jing, Li, Xin-Ran, Hou, Bao-Rong
Format: Article
Language:English
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Summary:SnS/TiO2 nanocomposites were successfully fabricated by a successive ionic layer adsorption and reaction process. The effect of the material concentration on the preparation of the SnS/TiO2 composite films was discussed. TiO2 nanotube arrays co-sensitized with SnS nanoparticles were used as a photoanode to provide photoelectric protection for 304 stainless steel. The crystalline structures, morphology, and optical absorption property of the samples were measured by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The photo-generated cathodic protection performance was characterized by measuring the open-circuit potential and photocurrent density response, and by performing electrochemical impedance spectroscopy. The results indicate that the SnS/TiO2 composites have high light absorption and photo-electrochemical properties under visible light irradiation. The SnS/TiO2 composite prepared at the optimal concentration could shift the corrosion potential of the 304 stainless steel form −280 mV to −720 mV.
ISSN:1945-7111
DOI:10.1149/2.0281810jes