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    Facile one-step fabrication of highly hydrophobic, renewable and mechanically flexible sponge with dynamic coating for efficient oil/water separation

    Year: 2019

    Journal: J. Taiwan Inst. Chem. Eng., Volume 95, FEB, page 515–524

    Authors: Li, Zhangdi; Zhang, Tao; Qiu, Fengxian; Yue, Xuejie; Yang, Dongya; Li, Pingping; Zhu, Yongli

    Organizations: Natural Science Foundation of Jiangsu Province [BK20161264, BK20160500, BK20161362]; National Nature Science Foundation of China [U1507115, 21878132, 21706100]; China Postdoctoral Science Foundation of Jiangsu Province [1701067C, 1701073C, 1601016A]; China Postdoctoral Science Foundation [2016M600373, 2018T110452]; Scientific Research Foundation for Advanced Talents; Jiangsu University [15JDG142]; Key Research and Development Program of Jiangxi Province [20171BBH80008]

    Keywords: One-step fabrication; Copper nanoparticles; Dynamic coating; Renewability; Oil/water separation

    Due to the high porosity and excellent absorption capacity, three-dimensional network bulk materials with hydrophobicity for clean-up oil-spill and organic solvents discharge have attracted significant interest and attention. Herein, this work presents a facile and low-cost method to fabricate highly-hydrophobic, mechanically flexible and dynamic copper nanoparticles coated commercial melamine sponge (Cu-NPs/MS) via one-step process without any hydrophobic modification. The as-prepared CuNPs/MS possesses high-hydrophobicity/superoleophilicity, high open-pore structure and great mechanical property which can be used for removal oil/solvents from water. The Cu-NPs/MS absorbent shows striking absorption capacities (60-145 g/g) at static state and admirable separation efficiencies (96.4-98.6%) as oil-collecting device under the pump driven at dynamic state. Moreover, the renewability of Cu-NPs/MS can be achieved via dissolving polluted and destroyed Cu-NPs coating, and redepositing dynamic Cu-NPs coating. This report shows high-performance Cu-NPs/MS absorbent is a promising practical application in clean-up oil-spill and pollution remediation. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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