硫化纳米零价铁复合材料对Cu(Ⅱ)去除性能的研究

doi:10.11896/cldb.23070123

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Abstract Sulfide nano zero-valent iron (S-nZVI) and its composites are famous for their excellent performance in removing heavy metals, but the high preparation cost greatly limits the development and application of S-nZVI. In this work, S-nZVI@Ma nanocomposites were prepared by fluidizing phase reaction using Na₂S₂O₄ as a single reducing agent. S-nZVI@Ma was characterized by means of SEM, TEM, EDS, XPS, XRD, FTIR and VSM. The removal effect of S-nZVI@Ma on Cu(Ⅱ) from simulated wastewater was studied. The results show that S-nZVI@Ma can efficiently remove more than 99% Cu(Ⅱ) from the simulated waste liquid and can be separated from the simulated waste liquid by external magnet. After 5 times of reuse, the removal rate of Cu(Ⅱ) by S-nZVI@Ma remained above 75%, indicating that the material has good magnetic recycling performance. The removal process of Cu(Ⅱ) conforms to the quasi-second-order kinetic model and the Langmuir isothermal adsorption model, and the maximum capacity (q_max) is 71.43 mg·g^-1. Thermodynamic studies show that the removal process is spontaneous and endothermic. The reactants were characterized by FESEM-EDS, XRD, XPS and FTIR, and the reaction mechanism was discussed from the point of view of electron transfer. The above research can provide reference for the practical application of S-nZVI.

Key words： S-nZVI sodium dithionite Cu(Ⅱ) wastewater adsorption

Published: 25 January 2025 Online: 2025-01-21

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X52

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	Articles by authors
	DING Yarong
	LI Canhua
	ZHANG Lanyue
	LI Jiamao
	HE Chuan
	LI Minghui
	ZHU Weichang
	WEI Shuxian

Cite this article:

DING Yarong,LI Canhua,ZHANG Lanyue, et al. Study on Cu(Ⅱ) Removal Properties of Sulfide Nano Zero-valent Iron Composites[J]. Materials Reports, 2025, 39(2): 23070123-8.

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https://www.mater-rep.com/EN/10.11896/cldb.23070123 OR https://www.mater-rep.com/EN/Y2025/V39/I2/23070123

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