磁性复合材料活化过硫酸盐去除水中双酚A

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Abstract The magnetic sandwich composite Fe₃O₄@MXene was prepared to activate peroxymonosulfate (PMS) for removing Bisphenol A(BPA) from water. The effects of PMS dosage, Fe₃O₄@MXene dosage, initial solution pH value and initial BPA concentration on BPA degradation were investigated. The results show that the degradation of BPA conformed to the quasi-first order reaction kinetics. At 25℃, the combination of Fe₃O₄@MXene dosage of 0.3g/L, PMS dosage of 1.01g/L and initial pH of 6.0could degrade 97.4% of BPA (25mg/L) after 90-minute, in which hydroxyl radical and sulfate radical were the dominant reactive oxygen species for BPA degradation despite having singlet oxygen involved. The MXene-supported Fe₃O₄ particles showed a uniform size distribution with obviously improved activity and stability. The Ti atoms on the surface of MXene helped accelerate the Fe(II)/Fe(III) redox cycle, which thus improved PMS activation. Evidently, the Fe₃O₄@MXene can be used as an ideal heterogeneous catalyst for the advanced oxidation process of persulfate.

Key words： Fe₃O₄@MXene composite advanced oxidation bisphenol A heterogeneous system

Received: 13 June 2023

PACS:

X703.5

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	Articles by authors
	ZHOU Yu-hui
	LIN Yang-qian
	WANG Yu-hao
	YANG Ying
	XU Xi-meng

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ZHOU Yu-hui,LIN Yang-qian,WANG Yu-hao等. Removing bisphenol A with magnetic sandwich composite activated peroxymonosulfate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 832-840.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I2/832

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