含二氧化钛的脉冲气液放电特性及降解四环素研究

doi:10.19595/j.cnki.1000-6753.tces.211439

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Abstract Pulsed discharge plasma coupled photocatalysts can effectively improve the degradation efficiency of organic pollutants in water. The addition of catalysts will significantly affect the discharge characteristics, which in turn affects the generation of aqueous species and the degradation. In the paper, the discharge characteristics, plasma properties were investigated by electrical and optical diagnosis, and concentration of aqueous reactive species and tetracycline degradation were studied with the addition of TiO₂. The influence of TiO₂ on discharge characteristics and degradation mechanism of tetracycline was discussed. The results show that the peak current with TiO₂is higher than that without TiO₂, and the increasing of current is enhanced with the increasing of voltage, and the peak current at 10kV pulse voltage increases by 2.8 times with the addition of TiO₂. The spectra intensity N₂(C-B), H_α and O(3p-3s) with TiO₂ were also significantly enhanced compared to those without the addition of TiO₂, and the concentration of H₂O₂ is increased by 7 times at 10kV voltage and 1kHz frequency. The addition of TiO₂ also significantly improved the degradation rate. At the voltage of 7kV, the degradation rate was 85.9% after 10 minutes' treatment, which was an increase of 33.48% compared to that without TiO₂.

Key words： Pulsed gas liquid discharge discharge characteristics photocatalysis antibiotic degradation

Received: 08 September 2021

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O531

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	Zhou Zikai
	Lu Xu
	Wang Sen
	Fang Zhi

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Zhou Zikai,Lu Xu,Wang Sen等. Characteristics of Pulse Gas-Liquid Discharge and Tetracycline Degradation with the Addition of TiO₂[J]. Transactions of China Electrotechnical Society, 2022, 37(22): 5862-5871.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211439 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I22/5862

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