Chapter 125. Investigation of Silicone-Modified Photocatalytic TiO2 Formation by Solid-Liquid Reaction and Its Structural Changes under Irradiation

  1. Prof. Dr. Norbert Auner2 and
  2. Prof. Dr. Johann Weis3
  1. Akira Nakabayashi

Published Online: 5 MAY 2008

DOI: 10.1002/9783527619924.ch125

Organosilicon Chemistry V: From Molecules to Materials

Organosilicon Chemistry V: From Molecules to Materials

How to Cite

Nakabayashi, A. (2003) Investigation of Silicone-Modified Photocatalytic TiO2 Formation by Solid-Liquid Reaction and Its Structural Changes under Irradiation, in Organosilicon Chemistry V: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619924.ch125

Editor Information

  1. 2

    Department of Inorganic Chemistry, University of Frankfurt, Marie-Curie-Straße 11, 60439 Frankfurt am Main, Germany

  2. 3

    Consortium of Electrochemical Industry GmbH, Zielstattstraße 20, 81379 Munich, Germany

Author Information

  1. Performance Chemicals R&D Department, Asahi Kasei Corporation Kawasaki-ku, Kanagawa 210-0863, Japan

Publication History

  1. Published Online: 5 MAY 2008
  2. Published Print: 26 SEP 2003

ISBN Information

Print ISBN: 9783527306701

Online ISBN: 9783527619924

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Keywords:

  • photocatalytic titanium dioxide;
  • solid-liquid reaction;
  • silicone-modified;
  • H-siloxane;
  • irradiation

Summary

The kinetic study of the solid-liquid reaction between photocatalytic titanium dioxide (photo-TiO2) and H- siloxane was investigated. The results showed that the solid-liquid reaction was inhibited in the presence of water, alcohol, ether, or other polar molecules, and supported its characterization as a dehydrogenation condensation reaction. The synthesized silicone-modified photo-TiO2 by the solid-liquid reaction was initially hydrophobic, but became super-hydrophilic after irradiation by BLB light. Both ESR and Si-NMR studies suggested that this effect was caused by the photocatalytic oxidation of the silicone present on the photo-TiO2.