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Synthesis of Au nanoclusters supported upon a TiO2 nanotube array

Published online by Cambridge University Press:  03 March 2011

Xi Liu ,
Thomas F. Jaramillo ,
Andrei Kolmakov ,
Sung-Hyeon Baeck ,
Martin Moskovits ,
Galen D. Stucky  and
Eric W. McFarland
Xi Liu
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080
Thomas F. Jaramillo
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080
Andrei Kolmakov
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-5080
Sung-Hyeon Baeck
Affiliation:
Department of Chemical Engineering, Inha University, Incheon, Korea 402-751
Martin Moskovits
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-5080
Galen D. Stucky
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-5080
Eric W. McFarland*
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Gold nanoclusters were successfully deposited in the interior of TiO2 nanotubes fabricated as ordered arrays. This approach is a useful fabrication platform for miniature planar fuel cells, gas sensors, and heterogeneous catalysts. A pressure impregnation process was used to inject the titania and Au precursors into mesoporous alumina. After thermal treatment, Au nanoclusters were well-dispersed on the interior walls of nanotubular TiO2. The TiO2 nanotubes were shown by x-ray diffraction to be entirely anatase. Transmission electron microscopy imaging confirmed that 80% of the Au particles were 4.1 nm ± 2.0 nm in diameter. This material exhibited catalytic CO oxidation activity at low temperatures.

Keywords

CatalyticNanoparticleThin film
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 5 , May 2005 , pp. 1093 - 1096
Copyright
Copyright © Materials Research Society 2005

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