Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids

Preparation, stabilization and characterization of TiO2 on thin polyethylene films (LDPE). Photocatalytic applications

“…Recently, TiO 2 films by sol-gel processing (Yu et al, 2000;Sung et al, 2004) and the degradation of organic compounds under light by TiO 2 fixed on foamed polyethylene sheet have been recently reported (Naskar et al, 1998).…”

Low temperatureN,N-dimethylformamide-assisted synthesis and characterization of anatase–rutile biphasic nanostructured titania

“…To overcome this problem an alternative method involving an ionic liquid-like medium has been recently described [11]. Moreover, Sung et al developed a two-step method involving a modified low temperature solgel process (60 • C), followed by a treatment with hot water at 90 • C for 3 h, in which titania is crystallized from the amorphous green material [12]. Anatase can also be obtained from the hydrolysis of 1,2-diolates of titanium [13] or the precipitation from a supersaturated solution of titanyl sulfate and potassium hydroxide [14].…”

Formation of nanoporous and nanocrystalline anatase films by pyrolysis of PEO–TiO2 hybrid films

“…However, anatase in a powder form is not only apt to transform to rutile phase, but also easy to agglomerate at an elevated temperature [11][12][13][14][15][16][17]. Sintering of anatase powder into a bulk form can cause the significant deterioration in photocatalytic properties not only due to the phase transformation of anatase to rutile, but also due to the reduction in the surface to bulk ratio [18]. TiO 2 immobilized on a substrate as a film form is desirable from the perspectives of applications and increased surface to volume ratio and also porous TiO 2 film can show further enhanced photocatalytic properties due to highly increased surface area reacting with contaminated fluids [19].…”