Interface structures of gold nanoparticles on TiO2 (110)

N. Shibata, A. Goto, K. Matsunaga, T. Mizoguchi, S. D. Findlay, T. Yamamoto, Y. Ikuhara

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

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
Article number136105
JournalPhysical review letters
Volume102
Issue number13
DOIs
Publication statusPublished - 2009 Mar 30
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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