Superhydrophobic and superoleophilic "sponge-like" aerogels for oil/water separation
Abbreviated Journal Title
J. Mater. Sci.
SILICA AEROGELS; PHYSICAL-PROPERTIES; OIL REMOVAL; WASTE-WATER; METHYLTRIMETHOXYSILANE; EFFICIENCY; Materials Science, Multidisciplinary
We report a facile approach to synthesize superhydrophobic and superoleophilic "sponge-like" aerogels through sol-gel reaction followed by supercritical drying, in which MTES and DMDES are used as co-precursors, EtOH as a solvent, CTAB as a surfactant, and HCl and NH3 center dot H2O as catalysts. The MTES-DMDES-based aerogels formed at the optimal molar ratio of MTES: DMDES: EtOH: H2O: HCl: NH3 center dot H2O: CTAB at 1.1: 0.9: 6: 12: 2 x 10(-3): 2 x 10(-3): 0.14 with a low density of 0.0897 g/cm(3) show a compression ratio of 80 % under 36.85 kPa stress. They are superhydrophobic and superoleophilic with a water contact angle of 153.6A degrees and an oil contact angle of 0A degrees. We find that the MTES-DMDES-based aerogels show the high adsorption capacity for various kinds of organic liquids and the excellent recyclability in removing oil from water.
Journal of Materials Science
"Superhydrophobic and superoleophilic "sponge-like" aerogels for oil/water separation" (2015). Faculty Bibliography 2010s. 6905.