Durable,water-cleanable,superhydrophilic coatings for oil/water separation under harsh conditions |
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| Authors: | Hailong Zhang Gailan Guo Libin Liu Furong Tao Jinping Ren Liang Zheng |
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| Institution: | 1. Institute of Advanced Energy Materials and Chemistry, School of Chemistry and Pharmaceutical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;2. Institute of Oceanographic Instrumentation, Shandong Provincial Key Laboratory of Marine Monitoring Instrument and Equipment Technology, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266061, China |
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| Abstract: | A simple, economical, and efficient method for fabricating stable hydrophilic/underwater superoleophobic coating under harsh conditions remains a significant challenge. Here, by the hydrolysis of 3-(Methacryloyloxy) propyltrimethoxysilane (TMSPMA) on cotton fabric and the free radical polymerization of 2-(Methacryloyloxy) ethyl] dimethyl-(3-sulfonic acid propyl) ammonium hydroxide (SBMA) and TMSPMA, a superhydrophilic coating was fabricated. The coating can withstand harsh environments, such as strong acid and alkali. In addition, the coated cotton fabrics show an effective separation of surfactant-stabilized oil-in-water emulsions with extreme flux as high as 1500 Lm?2 h?1 only under gravity. Importantly, the oil-contaminated coated cotton fabrics can be cleaned only by water washing. The outstanding properties of the coating including durability, recyclability and resistance to harsh environment, highlight its practical application in emulsion separation and oily wastewater purification. |
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| Keywords: | Corresponding author Coating Superhydrophilicity Underwater superoleophobicity Harsh environment |
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