Eco-friendly superhydrophobic MOF-doped with cellulose acetate foam for efficient oil-water separation. Issue 6 (December 2022)

• Record Type: Journal Article
• Authors: Wang, Shihao; Gao, Zhuwei; Qi, Xinyu; Li, Chengxin; Xie, Yuxin; Yang, Xia; Song, Wenjie; Liu, Zhongxin
• Is Part Of: Journal of environmental chemical engineering. Volume 10:Issue 6(2022)
• Publication Date: 2022-12
• Subjects: MOF doping -- Superhydrophobic -- Oil-water separation -- Adsorption -- TINIPS method; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2022.108521
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: In recent years, scholars are interested in finding ways to enhance porous materials' performance at oil-water separation. In this study, ZIF-8-doped cellulose acetate foam (ZIF-8/CA) was prepared by the thermally induced non-solvent induced phase separation (TINIPS) method. The results demonstrated that the addition of ZIF-8 significantly enhanced the foam's microscopic pore structure and infiltration properties. It developed the foam with superhydrophobic properties, whose value of water contact angle was 153°. Meanwhile, ZIF-8/CA, as good oil-adsorbing material, could easily accomplish the selective separation of soybean oil, CCl4 and emulsified xylene in water. It had a saturation adsorption capacity of 6.89–14.61 g/g for oils and organics such as soybean oil and n-hexane. In addition, ZIF-8/CA had good environmental adaptability and could be utilized with a peristaltic pump to separate oil-water mixtures continuously. The separation efficiency was as high as 98.7%, showing good practical application value. Graphical Abstract: ga1 Highlights: Preparation method of ZIF-8/CA is simple and low-cost. Adsorption rate of ZIF-8/CA is fast and saturated adsorption capacity is high. ZIF-8/CA has good recycling performance and environmental adaptability. Continuous oil-water separation efficiency of ZIF-8/CA device is up to 98.7%.