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Synthesis of Au nanoclusters supported upon a TiO2 nanotube array

  • Xi Liu (a1), Thomas F. Jaramillo (a1), Andrei Kolmakov (a2), Sung-Hyeon Baeck (a3), Martin Moskovits (a2), Galen D. Stucky (a2) and Eric W. McFarland (a1)...

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.

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Corresponding author

a)Address all correspondence to this author. e-mail: mcfar@engineering.ucsb.edu

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Keywords

Synthesis of Au nanoclusters supported upon a TiO2 nanotube array

  • Xi Liu (a1), Thomas F. Jaramillo (a1), Andrei Kolmakov (a2), Sung-Hyeon Baeck (a3), Martin Moskovits (a2), Galen D. Stucky (a2) and Eric W. McFarland (a1)...

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