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HAADF‐STEM observation of Au nanoparticles on TiO 2
Author(s) -
Akita T.,
Tanaka K.,
Kohyama M.,
Haruta M.
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2999
Subject(s) - scanning transmission electron microscopy , dark field microscopy , nanoparticle , substrate (aquarium) , transmission electron microscopy , materials science , catalysis , scanning electron microscope , nanotechnology , crystallography , chemistry , microscopy , optics , physics , biochemistry , oceanography , geology , composite material
Gold nanoparticles deposited on a TiO 2 single‐crystalline substrate as model structure of Au/TiO 2 catalysts were observed by HAADF‐STEM (high‐angle annular dark field scanning transmission electron microscope) to investigate the interface structure. The atomic columns of Au and Ti were clearly identified, and the distance between the Au and Ti layers at the interface with the relationship of Au(111)[1–10]//TiO 2 (110)[001] was estimated as 0.33 nm. The interface structure was discussed from the viewpoint of the status of oxygen atoms. Copyright © 2008 John Wiley & Sons, Ltd.