Fabrication of TiO2 nanospheres by template replication in porous carbon networks

J. C. Kim; Y. N. Kim; E. O. Chi; N. H. Hur; S. B. Yoon; J. S. Yu

doi:10.1557/JMR.2003.0108

Fabrication of TiO₂ nanospheres by template replication in porous carbon networks

J. C. Kim, Y. N. Kim, E. O. Chi, N. H. Hur, S. B. Yoon, J. S. Yu

Department of Energy and Science and Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

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.

Original language	English
Pages (from-to)	780-783
Number of pages	4
Journal	Journal of Materials Research
Volume	18
Issue number	4
DOIs	https://doi.org/10.1557/JMR.2003.0108
State	Published - Apr 2003

Bibliographical note

Funding Information:
The Creative Research Initiative Program supported this work. J-S. Yu wishes to acknowledge the Korea Research Foundation (KRF-2001-041-D00177) for its financial support.

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title = "Fabrication of TiO2 nanospheres by template replication in porous carbon networks",

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.",

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note = "Funding Information: The Creative Research Initiative Program supported this work. J-S. Yu wishes to acknowledge the Korea Research Foundation (KRF-2001-041-D00177) for its financial support.",

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doi = "10.1557/JMR.2003.0108",

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T1 - Fabrication of TiO2 nanospheres by template replication in porous carbon networks

AU - Kim, J. C.

AU - Kim, Y. N.

AU - Chi, E. O.

AU - Hur, N. H.

AU - Yoon, S. B.

AU - Yu, J. S.

N1 - Funding Information: The Creative Research Initiative Program supported this work. J-S. Yu wishes to acknowledge the Korea Research Foundation (KRF-2001-041-D00177) for its financial support.

PY - 2003/4

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N2 - 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.

AB - 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.

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DO - 10.1557/JMR.2003.0108

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EP - 783

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 4

ER -

Fabrication of TiO₂ nanospheres by template replication in porous carbon networks

Abstract

Bibliographical note

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