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Analytical High-Resolution TEM Study on Au/TiO2 Catalysts

Published online by Cambridge University Press:  10 February 2011

T. Akita ,
K. Tanaka ,
S. Tsubota  and
M. Haruta
T. Akita
Affiliation:
Osaka National Research Institute, AIST, Midorigaokal-8-31, Ikeda, Osaka, 563-8577, JAPAN, [email protected]
K. Tanaka
Affiliation:
Osaka National Research Institute, AIST, Midorigaokal-8-31, Ikeda, Osaka, 563-8577, JAPAN, [email protected]
S. Tsubota
Affiliation:
Osaka National Research Institute, AIST, Midorigaokal-8-31, Ikeda, Osaka, 563-8577, JAPAN, [email protected]
M. Haruta
Affiliation:
Osaka National Research Institute, AIST, Midorigaokal-8-31, Ikeda, Osaka, 563-8577, JAPAN, [email protected]
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Abstract

HRTEM(High-Resolution Transmission Electron Microscope), HAADF-STEM (High Angle Annular Dark Field Scanning Transmission Electron Microscope) and EELS(Electron Energy Loss Spectroscopy) techniques were applied for the characterization of Au/TiO2 catalysts. HAADFSTEM provides precise size distributions for Au particles smaller than ∼2nm in diameter. It was observed that many small particles under 2nm were supported on anatase TiO2 having a large surface area. The HAADF-STEM method was examined as a way to measure the shape of Au particles. EELS measurements were also used to examine the interface between Au and TiO2 support to study electronic structure effects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 589 , 1999 , 253
Copyright
Copyright © Materials Research Society 2001

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