EFFECT OF METAL IONS ON PHOTOCATALYTIC PERFORMANCE OF TiO2 FILM PREPARED BY MICRO-ARC OXIDATION

Zhongcai Shao (), Yonghui Cui, Xiaodan Li, Lina Yu and Xiaoyi Shen
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Zhongcai Shao: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Yonghui Cui: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Xiaodan Li: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Lina Yu: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Xiaoyi Shen: #x2020;School of Metallurgy, Northeastern University, Shenyang 110004, P. R. China

Surface Review and Letters (SRL), 2020, vol. 27, issue 01, 1-7

Abstract: The effect of different metal ions on the photocatalytic property of TiO2 film prepared by micro-arc oxidation was studied. Photocatalytic experiments showed that the impregnation of metal ions increased the photocatalytic efficiency of TiO2. The increase of transition element Fe3+ and the rare earth element Dy3+ is more obvious, and the optimum concentration is 0.1mol/L. The SEM results showed that there was no significant change on the surface of TiO2 film before and after metal ion immersion. The results of EDS surface scanning showed that Fe and Dy elements were uniformly distributed on the surface of TiO2 film after metal ion impregnation, and the deposition amounts were 0.81% and 3.39%, respectively. XRD results showed that a new phase was formed in Fe3+-impregnated TiO2, which could improve the photocatalytic efficiency.

Keywords: Titanium dioxide; photocatalytic; metal ions; transition element; rare earth (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19500938

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