钴锰硫化物活化过硫酸盐强化降解盐酸四环素

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Abstract Manganese and cobalt bimetallic sulfide (MnCo₂S₄) was prepared by a simple two-step method. The morphology, crystal structure and composition of MnCo₂S₄ were analyzed by scanning electron microscope, X-ray diffraction and X-ray photoelectron spectroscopy, respectively. Degradation efficiency and pathways of tetracycline hydrochloride in MnCo₂S₄/PMS system were explored. The degradation efficiency of TC reached 88% in 30min when concentrations of MnCo₂S₄ and PMS were both 0.1g/L. The degradation efficiency of TC remained high in wide pH value range (3~9), which was attributed to the continuous supply of metal active sites of Mn²⁺ and Co²⁺ in MnCo₂S₄ and the synergistic effect of cobalt and manganese. Quenching experiment and electron paramagnetic resonance (EPR) technology provided that SO₄•^-, •OH and ¹O₂ were the main active species in MnCo₂S₄/PMS system. This research gives a new strategy for bimetallic sulfide catalyst construction to activate PMS and treat refractory pollutants.

Key words： bimetallic sulfide tetracycline hydrochloride peroxymonosulfate catalytic degradation

Received: 27 June 2022

PACS:

X703.5

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	Articles by authors
	XIE Jin-ling
	PU Jia-xing
	LI Si-yu
	HUANG Li
	GONG Xiao-bo

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XIE Jin-ling,PU Jia-xing,LI Si-yu等. Enhanced degradation of tetracycline hydrochloride by cobalt-manganese sulfide activated peroxymonosulfate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(2): 544-551.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I2/544

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