高活性阳极制备及阿莫西林降解中的毒性效应

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Abstract A highly efficient Ti/PbO₂ anode with multi catalytic sites was prepared by current regulation, and its morphology, crystalline and electrochemical performance were characterized. Amoxicillin (AMX), a common antibiotic, was used as the target organic compound to investigate its toxicity evolution during the electrocatalytic degradation. Results showed that the surface morphology of electrode surface changed from "pyramid" to "cauliflower" with the increase of deposition current density, but the crystal phase was kept β-PbO₂. Meanwhile, the voltammetric capacity increased and the membrane impedance decreased for prepared anode. Toxicity test showed that AMX concentration in water was negatively correlated with the algae density of Scenedesmus obliquus, but it exhibited a "low concentration promotion, high concentration inhibition" effect on the chlorophyll synthesis. In addition, the optimized electrode exhibited a good degradation effect on AMX and the toxicity level of AMX increased first and then decreased during electrocatalytic degradation. The TELI_total value increased from 1.54 to 2.61, and then decreased to 1.63 after 150 minutes. The results of 110 kinds of gene stress showed that AMX had a significant effect on the oxidative stress and protein stress during electrocatalytic degradation.

Key words： current regulation Ti/PbO₂ anode amoxicillin electrocatalytic degradation toxicity effects

Received: 17 June 2020

PACS:	X171.5
	X703

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	Articles by authors
	LI Xiao-liang
	WANG Xue
	QIU Xiao-peng
	LU Si-jia
	XIN Feng-dan
	ZHENG Xing

Cite this article:

LI Xiao-liang,WANG Xue,QIU Xiao-peng等. Preparation of high active anode and its toxicity in amoxicillin degradation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(2): 727-734.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I2/727

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