H2O-controlled synthesis of TiO2 with nanosized channel structure through in situ esterification and its application to photocatalytic oxidation

Enhanced photocatalytic discoloration of acid fuchsine wastewater by TiO2/schorl composite catalyst

“…Previously reported literatures for the anatase-rutile transformation reveal various informations. For example, some researchers considered that the rutile phase of TiO 2 appeared at 600 • C or 700 • C, and formed completely at 900 • C [33,34]. Contrary to that, the presence of two phases (anatase and rutile) after heat treatment up to 900 • C was observed by Stojanović's group [35]; Liu and Chen found that, in S-doped TiO 2 photocatalyst, the phase transformation of anatase to rutile started at 800 • C, which is much higher than naked TiO 2 [36]; when the double salt (NH 4 ) 2 TiO(SO 4 ) 2 was decomposed in the static air to prepare TiO 2 , rutile occurred at 800 • C or above [37]; and, when anatase TiO 2 powders were prepared by an alcohothermal method using tetra-n-butyl titanate as a precursor, even calcination at 800 • C for 4 h, the main crystal phase was still anatase, and small peaks of rutile phase began to appear [38].…”

Purification of Toxic Compounds in Water and Treatment of Polymeric Materials

“…Major studies focused on the degradation mechanism of DNA bases (uracil, thymine, and cytosine) and the effect of coexistent ions on the activity of the photocatalyst (Dhananjeyan et al 1996(Dhananjeyan et al , 1997(Dhananjeyan et al , 2000aHorikoshi et al 1999;Jaussaud et al 2000;Horikoshi and Hidaka 2001;Calza et al 2004). Several reports dealt with the photocatalytic degradation of pyrimidine derivative pesticides such as diazinon and 2-isopropyl-6-methyl-4-pyrimidinol (IMP) (Kouloumbos et al 2003;Lee et al 2003Lee et al , 2005Oh et al 2006Oh et al , 2007. These studies are reviewed in this chapter.…”