Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-23T11:08:56.087Z Has data issue: false hasContentIssue false
  • English
  • Français

Characterization of Anatase Nanocrystal-Precipitated Coatings From (100 − x)SiO2·xTiO2 Gel Films Via The Sol-Gel Process with Boiling Hot Water Treatment

Published online by Cambridge University Press:  03 March 2011

Atsunori Matsuda ,
Tatsuo Matoda ,
Toshihiro Kogure ,
Kiyoharu Tadanaga ,
Tsutomu Minami  and
Masahiro Tatsumisago
Atsunori Matsuda
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan
Tatsuo Matoda
Affiliation:
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan
Toshihiro Kogure
Affiliation:
Department of Earth and Planetary Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
Kiyoharu Tadanaga
Affiliation:
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan
Tsutomu Minami
Affiliation:
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan
Masahiro Tatsumisago
Affiliation:
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan
Get access

Abstract

Considerable amounts of anatase nanocrystals were formed on the (100 − x)SiO2·xTiO2 coatings with x of 16.5 and 25 mol% with boiling water treatment, whereas the formation of anatase nanocrystals was not clearly observed for the coatings with x of 50 and 75 mol%. Despite the lower TiO2 content, the coatings with x of 16.5 and 25 mol% showed higher concentration of Si–O–Ti bonds among the coatings. Thus, the hydrolysis of Si–O–Ti bonds and resultant sites should facilitate the nucleation and growth of anatase nanocrystals. High transparency, high photocatalytic activity, and superhydrophilicity were demonstrated for the anatase nanocrystals-precipitated coatings.

Keywords

CoatingPhotochemicalSol-gel
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 1 , January 2005 , pp. 256 - 263
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Matsuda, A., Kogure, T., Matsuno, Y., Katayama, S., Tsuno, T., Tohge, N. and Minami, T.: Structural changes of sol-gel derived TiO2-SiO2 coatings in an environment of high temperature and high humidity. J. Am. Ceram. Soc. 76, 2899 (1993).Google Scholar
2Matsuda, A., Kotani, Y., Kogure, T., Tatsumisago, M. and Minami, T.: Transparent anatase nanocomposite films by the sol-gel process at low temperatures. J. Am. Ceram. Soc. 83, 229 (2000).Google Scholar
3Matsuda, A., Matoda, T., Kogure, T., Tadanaga, K., Minami, T. and Tatsumisago, M.: Lowering of preparation temperatures of anatase nanocrystal-dispersed coatings via sol-gel process with hot water treatment. J. Am. Ceram. Soc. (in press).Google Scholar
4Matsuda, A., Kotani, Y., Kogure, T., Tatsumisago, M. and Minami, T.: Photocatalytic decomposition of acetaldehyde with anatase nanocrystal-dispersed silica films prepared by the sol-gel process with hot water treatment. J. Sol-Gel Sci. Technol. 22, 41 (2001).CrossRefGoogle Scholar
5Kotani, Y., Matoda, T., Matsuda, A., Kogure, T., Tatsumisago, M. and Minami, T.: Anatase nanocrystal-dispersed thin films via sol-gel process with hot water treatment: effects of poly(ethyleneglycol) addition on photocatalytic activities of the films. J. Mater. Chem. 11, 2045 (2001).Google Scholar
6Matsuda, A., Matoda, T., Kotani, Y., Kogure, K., Tatsumisago, M. and Minami, T.: Evaluation of photocatalytic activities of transparent anatase-nanocrystals dispersed silica films prepared by the sol-gel process with hot water treatment. J. Sol-Gel Sci. Technol. 23, 517 (2003).Google Scholar
7Matsuda, A., Matoda, T., Kogure, K., Tadanaga, K., Minami, T. and Tatsumisago, M.: Formation of anatase nanocrystals-precipitated coatings on plastic substrates by the sol-gel process with hot water treatment. J. Sol-Gel Sci. Technol. 27, 61 (2003).Google Scholar
8Kotani, Y., Matsuda, A., Kogure, T., Tatsumisago, M. and Minami, T.: Effects of addition of poly(ethyleneglycol) on formation of anatese nanocrystals in SiO2-TiO2 gel films with hot water treatment. Chem. Mater. 13, 2144 (2001).Google Scholar
9Ollis, D.E. and Al-Ekabi, H.: Photocatalytic Purification of Water and Air (Elsevier, New York, NY,1993).Google Scholar
10Kaneko, M. and Okura, I.: Photocatalysis: Science and Technology (Kodansha and Springer, Tokyo and Berlin,2002).Google Scholar
11Diebold, U.: The surface science of titanium dioxide. Surf. Sci. Rep. 48, 53 (2003).Google Scholar
12Wang, R., Hashimoto, K., Fujishima, A., Chikuni, M., Kojima, E., Kitamura, A., Shimohigoshi, M. and Watanabe, T.: Light induced amphiphilic surface. Nature 388, 431 (1997).CrossRefGoogle Scholar
13Machida, M., Norimoto, K., Watanabe, T., Hashimoto, K. and Fujishima, A.: The effects of SiO2 addition in super-hydrophilic property of TiO2 catalyst. J. Mater. Sci. 34, 2569 (1999).Google Scholar
14Fujushima, A., Rao, T.N. and Tryk, D.A.: Titanium dioxide photocatalysis. J. Photochemistry and Photobiology C. J. Photochem. Photobio., Photochem. Rev. 1, 1 (2000).Google Scholar
15Mukherjee, S.P.: Sol-gel process in glass science and technology. J. Non-Cryst. Solids 42, 477 (1980).CrossRefGoogle Scholar
16Ocaˇa, M., Garcia-Ramos, J.V. and Serna, C.J.: Low-temperature nucleation of rutile observed by Raman spectroscopy during crystallization of TiO2. J. Am. Ceram. Soc. 75, 2010 (1992).Google Scholar