铟掺杂PbO<sub>2</sub>电极制备及电催化降解强力霉素

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Abstract An Indium doped PbO₂ electrode (In-PbO₂) was fabricated by using an electrodeposition technique. The influences of In doping on the morphology, structure and electrochemical properties of the electrode were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry (CV), linear sweep voltammetry (LSV), accelerated life test and fluorescence spectrophotometry. Compared with the pure PbO₂ electrode, the surface of In-PbO₂ electrode was uniform and dense with less number of cracks, and the grains were refined, which increased the surface area and enhanced its ability of producing hydroxyl radicals. When the In doping amount was 2g/L, the corresponding electrode showed the best electrochemical performance with highest oxygen evolution potential (1.73V). The accelerated life of the electrode was increased from 84h to 148h. After electrolysis for 150min, the degradation rate of doxycycline, TOC removal rate and mineralization current efficiency (MCE) of this electrode were 98.2%, 30.4% and 3.01% respectively, which were higher than those of undoped PbO₂ electrode (90.1%, 26.4%, 2.63%).

Key words： Indium doped PbO₂ electrode electrocatalytic degradation doxycycline

Received: 12 December 2019

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X703

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	XU Cong
	ZHANG Lu-yao
	XU Jie
	BAO Ji-qing

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XU Cong,ZHANG Lu-yao,XU Jie等. Preparation of Indium doped PbO₂ electrode and its electrocatalytic degradation of doxycycline[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(8): 3441-3448.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I8/3441

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