Paper Title:
Preparation and Investigation of TiO2 Sol Containing Nanometer Anatase Crystalline Grains
  Abstract

TiO2 sol containing nano anatase crystalline grains was prepared using Ti(OC4H9)4 as a precursor in a water-excessive reaction system. The processes of hydrolytic-polymeric reactions and the structures of the products were analyzed. It was found that the -OC4H9 radicals previously linked to Ti atom in Ti (OC4H9) 4 molecular are broken, and there is no organic radicals linked to Ti atoms in the final sol. The structure of particles in the sol changes along with time from tetrahedral [TiO4] to octahedral [TiO6], with the coordination number changing from 3.14 to 5.18, accordingly. Therefore, the structure becomes closer to an anatase, which is octahedral [TiO6] with a coordination number of 6.0. Transmission electron microscope micrograph also reveals the foursquare projection shape of crystalline grains with a size of 200 nm in the sol. As the particles in the sol have a quasi anatase structure, the TiO2 sol can directly photodegrade Rhodamine B under Ultraviolet illumination with a rate of 62.35%.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2350-2352
DOI
10.4028/www.scientific.net/KEM.336-338.2350
Citation
J. W. Gao, Q. H. Shen, M. Fang, P. Wang, L. Li, "Preparation and Investigation of TiO2 Sol Containing Nanometer Anatase Crystalline Grains", Key Engineering Materials, Vols. 336-338, pp. 2350-2352, 2007
Online since
April 2007
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Price
$32.00
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