Synthesis and characterization of silica–titania nanocomposite via a combination of sol–gel and mechanochemical process

Mechanochemical effects of ZnO powder in a wet super-fine grinding system as indicated by instrumental characterization

“…A slight increase in crystal size was notice after 3-4 h of grinding. A similar observation was found for SiO 2 -TiO 2 bulk gel after being mechanochemically ground for 10 h and the increase in particle size was attributed to competition between the processes of aggregation and grinding (Ting et al, 2008). Under intensive grinding condition, if the initial powder was already represented by the particles with a mean size close to the minimum, increasing grinding time could result in a slight increased in particle size (Karagedov and Lyakhov, 2003).…”

Synthesis and micro structural investigations of titania–silica nano composite aerogels

“…The shoulder at 2360 cm À1 is due to interference of CO 2 which may have not been compensated while measuring the data for the sample and the background. The absorption band at around 566 cm À1 is attributed to TieO bond in TiO 2 [17]. The intensity of the TieO absorption band from TieOeTi increases with an increase in TiO 2 content in the composite.…”

Microstructural characterization of the V-doped nano-titania

“…The sol-gel method is a versatile method for the synthesis of nano-materials with high surface area to volume ratio [13][14][15][16][17]. In a typical sol-gel process, a colloidal suspension (a sol) is formed as a result of hydrolysis and polymerization reactions of the precursors, which are usually inorganic metal salts or metal organic compounds such as metal alkoxides.…”