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Fabrication of TiO2 nanospheres by template replication in porous carbon networks

Published online by Cambridge University Press:  06 January 2012

J. C. Kim ,
Y. N. Kim ,
E. O. Chi ,
N. H. Hur ,
S. B. Yoon  and
J-S. Yu
J. C. Kim
Affiliation:
Center for CMR Materials, Korea Research Institute of Standards and Science, Yusong, P.O. Box 102, Daejon 305–600, Korea
Y. N. Kim
Affiliation:
Center for CMR Materials, Korea Research Institute of Standards and Science, Yusong, P.O. Box 102, Daejon 305–600, Korea
E. O. Chi
Affiliation:
Center for CMR Materials, Korea Research Institute of Standards and Science, Yusong, P.O. Box 102, Daejon 305–600, Korea
N. H. Hur
Affiliation:
Center for CMR Materials, Korea Research Institute of Standards and Science, Yusong, P.O. Box 102, Daejon 305–600, Korea
S. B. Yoon
Affiliation:
Department of Chemistry, Hannam University, Daejon 306–701, Korea
J-S. Yu
Affiliation:
Department of Chemistry, Hannam University, Daejon 306–701, Korea
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Abstract

A silica-colloidal template approach was used to prepare monodisperse nanospheres of TiO2. Close-packed arrays of silica spheres were infiltrated with a sucrose precursor used as a source of carbon. The infiltrated sucrose was carbonized by calcination at 800 °C in flowing argon. After removal of the silica spheres by washing with HF, a porous carbon replica remained. The resulting pores in the replica were then filled with a chloroform solution of titanium alkoxide. Nanospheres of TiO2 approximately 200 nm in diameter were obtained after calcination of the organic component at 600 °C in an argon atmosphere and subsequent sintering in air at 700 °C.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 4 , April 2003 , pp. 780 - 783
Copyright
Copyright © Materials Research Society 2003

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References

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