Versatility of Laser Pyrolysis Applied to the Synthesis of TiO 2 Nanoparticles – Application to UV Attenuation

• Published in: European journal of inorganic chemistry 2008-02, Vol.2008 (6), p.883-889
• Main Authors: Pignon, Bruno, Maskrot, Hicham, Guyot Ferreol, Véronique, Leconte, Yann, Coste, Servane, Gervais, Monique, Pouget, Thierry, Reynaud, Cécile, Tranchant, Jean‐François, Herlin‐Boime, Nathalie
• Format: Article
• Language: English
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.200700990

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)