title: Ultrasound with low intensity assisted the synthesis of nanocrystalline TiO2 without calcination.
abstract: A novel method has been developed for the preparation of nano-sized TiO(2) with anatase phase. Nanoparticles with diameter about 6 nm were prepared at a relatively low temperature (75 degrees C) and short time. The synthesis was carried out by the hydrolysis of titanium tetra-isopropoxide (TTIP) in the presence of water, ethanol, and dispersant under ultrasonic irradiation (500 kHz) at low intensity. The results show that variables such as water/ethanol ratio, irradiation time, and temperature have a great influence on the particle size and crystalline phases of TiO(2) nanoparticles. Characterization of the product was carried out by different techniques such as powder X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and UV-vis spectroscopy.
authors.affiliation: Department of Chemistry, Ferdowsi University of Mashhad, 91775 Mashhad, Iran.
authors.forename: Narjes
authors.initials: N
authors.lastname: Ghows
authors.forename: Mohamad H
authors.initials: MH
authors.lastname: Entezari
mesh_terms: D002118:Calcium / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D011829:Radiation Dosage; D013010:Sonication; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects*
chemical_list: C009495:titanium dioxide; D014025:Titanium; D002118:Calcium