ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Nanocrystalline titania pigments were produced by a novelsynthesis route consisting of a high temperature forced hydrolysis in acoordinating high-boiling solvent. The effect of synthesis conditions as wellas doping with Cr, Sb and V on the particle size and on the anatase-to-rutiletransformation was studied by temperature-resolved synchrotron powderdiffraction. The experiments were performed directly on as-synthesized lowconcentration suspensions of titania nanoparticles (up to 230°C) and ondried titania nanoparticles (up to 950°C). Crystallite size of as-synthesizednanoparticles is in the 5 to 50 nm range, being affected by the synthesisconditions as well as by doping and exhibits a slow-rate coarsening trendwith temperature. The anatase-to-rutile transformation is drasticallyinfluenced by both synthesis conditions and doping. In particular, dopingaffected the anatase-to-rutile transformation rate, while the synthesisconditions influenced the phase composition, causing the appearance ofbrookite
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.51.99.pdf
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