Eco-friendly graphene-doped cellulose acetate superhydrophobic polymer for efficient oil-water separation. (October 2022)

• Record Type: Journal Article
• Authors: Wang, Shihao; Gao, Zhuwei; Qi, Xinyu; Li, Chengxin; Xie, Yuxin; Yang, Xia; Lin, Zhenlong; Liu, Zhongxin
• Is Part Of: Journal of water process engineering. Volume 49(2022)
• Publication Date: 2022-10
• Subjects: Porous polymer -- TINIPS method -- Superhydrophobic -- Oil-water separation -- Graphene; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2022.103098
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: In the field of oil-water separation, porous polymers with specific wettability have demonstrated great promise. Herein, we prepared a graphene-doped cellulose acetate porous polymer (graphene/CA) by thermally induced non-solvent induced phase separation (TINIPS) method. Wettability and oil absorption performance of graphene/CA-1.5 were studied with emphasis. The results showed that the water contact angle of graphene/CA-1.5 was 151°, while the oil contact angle was only 0°. As an adsorbent material, graphene/CA-1.5 could adsorb oils and organics such as soybean oil and CCl4 from water, corresponding to a saturation capacity between 6.71 g/g and 14.72 g/g. Moreover, graphene/CA-1.5 remained stable hydrophobicity and oil absorption performance in environments such as strong acids, strong alkalis and extreme temperatures. Therefore, graphene/CA-1.5 is a potential adsorbent material for the treatment of oil pollution. Graphical abstract: Unlabelled Image