Thermal behaviour of titanium dioxide nanoparticles prepared by precipitation from aqueous solutions

0350790 - ÚACH 2011 RIV HU eng J - Journal Article
Pulišová, Petra - Boháček, Jaroslav - Šubrt, Jan - Szatmáry, Lórant - Bezdička, Petr - Večerníková, Eva - Balek, V.
Thermal behaviour of titanium dioxide nanoparticles prepared by precipitation from aqueous solutions.
Journal of Thermal Analysis and Calorimetry. Roč. 101, č. 2 (2010), s. 607-613. ISSN 1388-6150. E-ISSN 1588-2926
R&D Projects: GA MŠMT 1M0577
Institutional research plan: CEZ:AV0Z40320502
Keywords : thermogravimetry * differential thermal analysis * emanation thermal analysis
Subject RIV: CA - Inorganic Chemistry
Impact factor: 1.752, year: 2010

Thermogravimetry-differential thermal analysis, emanation thermal analysis, mass spectrometry detection, Fourier transform infrared and XRD were used to characterize thermal behaviour of titanium dioxide photocatalyst precursors prepared by precipitation at various conditions from peroxotitanic acid sols. The transmission electron microscopy HRTEM technique was used to characterize the surface microstructure. The sols contained TiO2 anatase particles of approximately 10 nm in diameter. During heating of the air dried samples, their chemical degradation took place giving rise to anatase. On further heating, the crystallization of anatase and formation of rutile phase was observed. To test the photocatalytic activity of the samples, the decomposition of 4-chlorophenol (4-CP) under ultraviolet and visible irradiation was monitored. It was shown that photocatalytic activities of the samples are comparable to the Degussa P25 photocatalyst reference material.
Permanent Link: http://hdl.handle.net/11104/0190696