Facile surface modification of ceramic membranes using binary TiO2/SiO2 for achieving fouling resistance and photocatalytic degradation

Tio2 coating on alumina membranes for continuous separation of dyes

“…As a green technology, photocatalysis has attracted extensive attention because it can effectively eliminate toxic organic substances, bacteria, and pollutants in water [1]. Oxide semiconductor photocatalysts, such as TiO 2 , ZnO, Fe 2 O 3 , WO 3 , and SnO 2 , can produce electron-hole pairs by absorbing appropriate photon energy [20][21][22][23][24]. The holes and electrons participate in the oxidation process to remove organic contaminants.…”

Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity

“…For one thing, the incorporation of hydrophobic groups can improve the stability of silica membranes under hydrothermal conditions, such as octyl [ 11 ], phenyl [ 12 ], alkylamine [ 13 ], methyl [ 14 , 15 ], perfluorodecyl [ 16 ], etc., which effectively reduce the Si–OH concentration on the surface of silica membrane materials, thereby reducing the physical adsorption of water molecules and enhancing the hydrophobicity of silica membranes. For another, further improvement of hydrothermal stability of silica membranes have been researched by introducing different types of inorganic metal/metal oxides, such as aluminum [ 17 ], zirconium [ 18 ], nickel [ 19 , 20 ], titanium [ 21 ], cobalt [ 22 , 23 ], palladium [ 24 , 25 ], magnesium [ 26 ], niobium [ 27 ], PdCo [ 28 ], FeCo [ 29 ], etc. They were all added in the process of sol synthesis, which produced great beneficial effects.…”