Photoelectrochemical Performance of SnS2 Sensitized TiO2 Nanotube for Protection of 304 Stainless Steel | Zendy

Jing Shao | Zendy; Xiutong Wang | Zendy; Hui Xu | Zendy; Xiaodong Zhao | Zendy; Jianmin Niu | Zendy; Zhaode Zhang | Zendy; Yanliang Huang | Zendy; Jizhou Duan | Zendy

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Photoelectrochemical Performance of SnS₂ Sensitized TiO₂ Nanotube for Protection of 304 Stainless Steel

Author(s) -

Jing Shao,

Xiutong Wang,

Hui Xu,

Xiaodong Zhao,

Jianmin Niu,

Zhaode Zhang,

Yanliang Huang,

Jizhou Duan

Publication year - 2021

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/abdc77

Subject(s) - materials science , photocurrent , dielectric spectroscopy , x ray photoelectron spectroscopy , photocatalysis , scanning electron microscope , electrochemistry , chemical engineering , open circuit voltage , absorption (acoustics) , absorption spectroscopy , diffuse reflectance infrared fourier transform , adsorption , composite number , visible spectrum , nanotechnology , composite material , optoelectronics , electrode , optics , chemistry , voltage , catalysis , physics , engineering , biochemistry , quantum mechanics

SnS 2 -sensitized TiO 2 nanotubes were fabricated via anodic oxidation and a successive ionic layer adsorption and reaction process. The prepared SnS 2 /TiO 2 composites were used as photoanodes, and the corresponding photocathodic protection effect on 304 stainless steel was studied. The effect of the number of adsorbed SnS 2 molecules on the photocatalytic protection conferred by the SnS 2 /TiO 2 composites was also analyzed. The morphology and composition of the samples were analyzed by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The optical absorption properties of the samples were analyzed by ultraviolet-visible diffuse reflectance spectroscopy. The electrochemical properties of the SnS 2 /TiO 2 composites were characterized in terms of their open circuit potential, the photocurrent density, the electrochemical impedance spectrum and the current-voltage curve and used to analyze the photocatalytic protection effect. The results show that the SnS 2 /TiO 2 composite exhibits higher visible light absorption and offers more photocathodic protection than pure TiO 2 nanotubes. Using SnS 2 /TiO 2 (6C) as a photoanode reduces the potential of 304 stainless steel to −730 mV.

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