A Facile Synthesis of Well-Defined Titania Nanocrystallites: Study on Their Growth, Morphology and Surface Properties

0375250 - ÚCHP 2013 RIV NL eng J - Journal Article
Matějová, Lenka - Matěj, Z. - Šolcová, Olga
A Facile Synthesis of Well-Defined Titania Nanocrystallites: Study on Their Growth, Morphology and Surface Properties.
Microporous and Mesoporous Materials. Roč. 154, SI (2012), s. 187-195. ISSN 1387-1811. E-ISSN 1873-3093.
[International Symposium on Characterization of Porous Solids - COPS 9 /9./. Dresden, 05.08.2011-08.06.2011]
R&D Projects: GA ČR GP104/09/P290; GA AV ČR KAN400720701
Institutional research plan: CEZ:AV0Z40720504
Keywords : TiO2 anatase * nanocrystalline structure * WPPM method
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 3.365, year: 2012

A fast and simple laboratory procedure for preparation of TiO2 anatase nanocrystals with defined crystallite-sizes (in the range from 4.5 to 15 nm) and distributions was developed. Titania anatase crystallites were synthesized by low-temperature hydrolysis of titanium (IV) alkoxides in hydrogen peroxide solution followed by calcination of the amorphous titania peroxo-product at temperature 300°C and higher. Textural and surface properties, particle morphology and purity of the synthesized TiO2 powders were characterized by nitrogen physisorption at -196°C, helium pycnometry, high-pressure mercury porosimetry, XPS, FESEM and organic elemental analysis. The determination of TiO2 phase composition and the evaluation of TiO2 crystallite-sizes and crystallite-size distributions were based on XRD using the advanced whole powder pattern modelling method.
Permanent Link: http://hdl.handle.net/11104/0207960