Interface structures of gold nanoparticles on TiO2 (110)

Naoya Shibata, A Goto, K Matsunaga, Teruyasu Mizoguchi, Scott Findlay, T Yamamoto, Yuichi Ikuhara

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Abstract

Scanning transmission electron microscopy and density functional theory are used to characterize atomic structures of nanoscale heterointerfaces between gold nanoparticles and a TiO2 (110) surface. It is found that when the gold nanoparticle size is smaller than a few nanometers, gold atoms preferentially attach to specific sites on the TiO2 surface and thus form an epitaxial and coherent heterointerface. Conversely, as the gold size becomes larger, the gold-TiO2 interface loses lattice coherency in order to accommodate the large lattice mismatch between the two dissimilar crystals
Original languageEnglish
Pages (from-to)136105-1 - 136105-4
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number13
DOIs
Publication statusPublished - 2009
Externally publishedYes

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