Journal
APPLIED SURFACE SCIENCE
Volume 441, Issue -, Pages 500-507Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.02.060
Keywords
Cotton fabric; Emulsion; Water-oil separation; Membrane; Adsorption
Categories
Funding
- Youth Science and Technology Creative Group Fund of Southwest Petroleum University [2015CXTD03]
- Majorly Cultivated Project of Sci-tech Achievements Transition from the Education Department in Sichuan Province [15CZ0005]
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With dopamine and NiFe2O4 particles, a novel modified cotton fabric (PDA-NiFe2O4@CF) was prepared by one-pot method. Surface morphology, composition of the PDA-NiFe2O4@CF were investigated with SEM, EDX, XRD and FT-IR, respectively. According to the results, the cotton fiber surface was well coated with NiFe2O4 particles. Subsequently, wetting behavior of the modified cotton fabric was determined. The PDA-NiFe2O4@CF is superamphiphilic in air, and a dual lyophobic behavior was indicated with an oil contact angle (OCA) of 153 degrees under water and a water contact angle (WCA) of 145 degrees under oil. The rough micro nano scale surface structure and high-surface-energy compositions of the PDA-NiFe2O4@CF makes the surface to be easily covered by one medium and enables it to repel other unmixable medium simultaneously. Therefore, water-oil mixtures can be separated on demand. Besides, with the unusual dual lyophobic surface of PDA-NiFe2O4@CF, both two types of emulsions were separated by gravity driven. On the other hand, it was also found that the as-prepared PDA-NiFe2O4@CF had good adsorption performance for methylene blue. (C) 2018 Elsevier B.V. All rights reserved.
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