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CSME 2019/12
Volume 40 No.6
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655-661
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TiO₂ and CeO₂ with SS316 Electrode for Degradation of Rh B in Photoelectric-Fenton System
Yi-Ta Wanga, Cheng-Ying Xieb, Yue-Sheng Linb and Chaur-Jeng Wangb
aDepartment of Mechanical and Electro-Mechanical Engineering, National ILan University, Yilan City, Yilan County 26041, Taiwan.
bDepartment of Mechanical Engineering, National Taiwan University of Science and Technology, Daan District, Taipei City 10607, Taiwan.
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Abstract:
In this research, photoelectric-Fenton reaction (advanced oxidation program) and photocatalysis were combined for treating Rh B wastewater. A certain percentage of CeO₂ added into TiO₂ after calcination can improve the effect of degradation. The composite (TiO₂-CeO₂) was used to modify the stainless-steel material (SS316). The results showed that the porosity of the plate after optimal parameterization was 18%, indicating that the electrode can effectively increase the contact area of the composite TiO₂-CeO₂, increasing its response current 2.11 times in linear sweep voltammetry. The conductivity of the modified electrode was 1.88 times greater than that of SS316 in a four-point probe experiment. In the Tafel corrosion experiment, the plate after optimal parameterization had a corrosion potential ranging from -299 mV to -160 mV and a corrosion current ranging from 524 nA to 107 nA, which greatly improved the anticorrosion effect of the original SS316 substrate. In the photoelectric-Fenton experiment, the degradation rate of the composite electrode was 50.83% in 30 min, which was 1.26 times higher that of the SS316 substrate. The results showed that the 3 TiO₂: 1 CeO₂:/SS316 electrode has good stability and a good degradation effect in the Photoelectric Fenton process.
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Keywords: Photocatalyst, Rh B, TiO₂, CeO₂, Photoelectric-Fenton
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©
2019
CSME , ISSN 0257-9731
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