Versatility of Laser Pyrolysis Applied to the Synthesis of TiO2 Nanoparticles – Application to UV Attenuation

✍ Scribed by Bruno Pignon; Hicham Maskrot; Véronique Guyot Ferreol; Yann Leconte; Servane Coste; Monique Gervais; Thierry Pouget; Cécile Reynaud; Jean-François Tranchant; Nathalie Herlin-Boime

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 698 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200700990

✦ Synopsis

Abstract

TiO~2~ nanoparticles show interesting catalytic and optical properties and are therefore highly demanded for several applications. In this paper, we show that pure and N‐doped TiO~2~ powders with an average diameter as low as 8 nm can be synthesized by laser pyrolysis, with the use of an aerosol of TTIP (titanium tetraisopropoxide) as the main precursor sensitized by C~2~H~4~. We demonstrate the possibility to control the anatase/rutile phase ratio over a large range, which was not achieved before, by tuning the experimental parameters. N‐doped particles have also been produced for the first time by this method by using a one‐step process through addition of NH~3~. First results illustrating the consequences in terms of UV absorption properties are also presented and correlated with the structural evolution and the presence of a doping element.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)