Preparation of CuS composite sponge and its application in purifying emulsion containing bacteria

被引：0
作者：
Xiao Q. [1 ]
Liao T. [1 ]
Ding L. [1 ]
Zhu Z. [2 ]
Peng D. [1 ]
Hu J. [1 ]
Yang H. [1 ]
机构：
[1] Key Laboratory for Green Chemical Process of Ministry of Education, School of Enviromental Ecology and Biological Engineering, Wuhan Institute of Technology, Hubei, Wuhan
[2] School of Optical Information and Energy Engineering, Wuhan Institute of Technology, Hubei, Wuhan
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 11期
关键词：
antibacterial; composites; copper sulfide; emulsion; photothermal conversion; separation;
D O I：
10.16085/j.issn.1000-6613.2022-2332
中图分类号：
学科分类号：
摘要：
Recently, superwetting materials are widely used in oil-water emulsion separation, but there are few reports on the simultaneous separation of complex oil-water mixtures containing bacteria. To solve this problem, a comprehensive strategy of one-step O/W separation and efficient sterilization by photothermal conversion was proposed. Using melamine sponge (MS) as the substrate, chitosan (CS), CuS and polyvinylpyrrolidone (PVP) were loaded on MS by a simple two-step soaking method, and the prepared MS@CS-CuS@PVP composite sponge had superhydrophilic/underwater superoleophobic and photothermal antibacterial properties. The chemical structure and micromorphology of the material before and after modification were characterized, and the purification ability of the composite sponge to emulsion containing bacteria was studied. The results showed that the underwater oil contact angle of the composite sponge reaches 155.4o with the addition of CuS nanoparticles, and it had the underwater superoleophobic property. Composite sponge was applied to the separation of oil-in-water emulsion, the separation efficiency was above 98.56%, and it had good chemical and mechanical stability. The high photothermal conversion performance and photothermal stability can promote the purification of the emulsion containing bacteria under light irradiation, which increased the separation flux by 22% and the sterilization rate by 18.84%. This would provide more inspirations for the separation of complex oil-water mixtures and provide new solutions to potential problems in industrial applications. © 2023 Chemical Industry Press. All rights reserved.
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页码：6031 / 6041
页数：10
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