期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 608, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2020.125611
关键词
Cement-sand; Superhydrophilicity; Underwater superoleophobicity; Water/oil separation; Scrape-coating
资金
- Natural Science Foundation of Ningxia, China [2019AAC03099, 2020AAC03194]
- National Natural Science Foundation of China [51662002]
A novel flexible cement-sand coated cotton fabric (CS@CF) with superhydrophilicity and underwater superoleophobicity was successfully prepared through a simple fabrication process without the need for chemical reagents, complex reactions, etc. This material shows high efficiency and recyclability in separating various water/oil mixtures and oil in-water emulsions, making it suitable for practical applications in industrial oily wastewater and oil spill treatments.
A novel flexible cement-sand coated cotton fabric (CS@CF) with superhydrophilicity and underwater superoleophobicity was prepared by scrape-coating of the paste of cement and sand onto cotton fabric followed by air drying. The fabrication process avoids chemical reagents, complex reaction, special equipment and complicated procedure, demonstrating a simple, cheap, eco-friendly route to produce superwetting filtration membrane. The as-prepared CS@CF presents high efficiency and recyclability for separating various water/oil mixtures and oil in-water emulsions. Moreover, the CS@CF could maintain its original wettability in harsh environments, and exhibits remarkable capability for the separation of water/oil mixtures containing hot water, alkali and salt. The simple preparation and excellent behavior could provide the CS@CF with practical application in industrial oily wastewater and oil spill treatments.
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