SiO2

Abstract(#br)Thin film of polydimethylsiloxane (PDMS) was deposited on SiO 2 nanoparticles by chemical vapor deposition, and SiO 2 became completely hydrophobic after PDMS coating. Mixtures of TiO 2 and PDMS-coated SiO 2 nanoparticles with various relative ratios were prepared, and distributed on glass surfaces, and water contact angles and photocatalytic activities of these surfaces were studied.

Abstract(#br)Commercial cotton fabric was coated with SiO 2 nanoparticles wrapped with a polydimethylsiloxane (PDMS) layer, and the resulting material surface showed a water contact angle greater than 160°. The superhydrophobic fabric showed resistance to water-soluble contaminants and maintained its original superhydrophobic properties with almost no alteration even after many times of absorption-washing cycles of oil. Moreover, superhydrophobic fabric can be used as a filter to separate oil from water.