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http://dx.doi.org/10.7842/kigas.2012.16.6.143

Tungsten-Doped Titania Nanopowders - Their Chemical Vapor Synthesis and Photocatalytic Activity  

Park, Bo-In (Center for Materials Architecturing, Institute of Multidisciplinary Convergence of Materials, Korea Institute of Science and Technology)
Kang, Kae-Myung (Center for Materials Architecturing, Institute of Multidisciplinary Convergence of Materials, Korea Institute of Science and Technology)
Jie, Hyunseock (Depart. of Materials Science & Engineering, Seoul National University of Science and Technology)
Song, Bong-Geun (Depart. of Materials Science & Engineering, Seoul National University of Science and Technology)
Park, Jong-Ku (Depart. of Materials Science & Engineering, Seoul National University of Science and Technology)
Cho, So-Hye (Depart. of Materials Science & Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Institute of Gas / v.16, no.6, 2012 , pp. 143-147 More about this Journal
Abstract
Photocatalytic properties of $TiO_2$ nanopowders has been received much attention due to their high potentials for environmental applications such as remediation of polluted environments. The $TiO_2$ nanopowders doped with metal or non-metal elements have been synthesized by variety methods such as flame method, chemical vapor synthesis, sol-gel, ion implantation, which affect a doping behavior in different ways resulting in different surface characteristics, leading to different photocatalytic activity. In addition to an effect of synthesis methods, the photocatalytic activity of $TiO_2$ nanopowders can be improved by subsequent heat-treatments. In this study, to obtain a highly efficient photocatalyst, we synthesized $TiO_2$ nanopowders doped with tungsten by the chemical vapor synthesis method (CVS) and determined their physical properties and photocatalytic activity, together with subsequent post-treatment in the range of $300^{\circ}C$ to $700^{\circ}C$.
Keywords
titania; nanopowder; chemical vapor synthesis (CVS); photocatalyst; tungsten;
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