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Title: Photocatalytic property of colloidal TiO2 nanoparticles prepared by sparking process
Authors: W. Thongsuwan
T. Kumpika
P. Singjai
Keywords: Materials Science
Physics and Astronomy
Issue Date: 1-Aug-2008
Abstract: Titanium oxide nanoparticles (NPs) were successfully prepared by sparking off two titanium tips into water for 1-5 h. The nanoparticle-dispersed water was obtained for further characterization. The transmission electron microscopy result shows that the particle size is in the range of 1-5 nm. The electron diffraction patterns and Raman spectra reveal that the as-prepared and the annealed samples at 250 °C are the anatase phase. However, the anatase-rutile phase transformation was observed from the samples at annealing temperature as low as 500 °C. The result of methylene blue-decoloration testing under sunbath suggests that the NPs have good photocatalytic property. © 2007 Elsevier B.V. All rights reserved.
ISSN: 15671739
Appears in Collections:CMUL: Journal Articles

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