Back

Title
  • en Preparation and structure of a single Au atom on the TiO2(110) surface : control of the Au-metal oxide surface interaction
Creator
    • en Takakusagi, Satoru
    • en Ariga, Hiroko
    • en Chun, Wang-Jae
    • en Suzuki, Shushi
    • en Koike, Yuichiro
    • en Uehara, Hiromitsu
    • en Miyazaki, Kotaro
    • en Iwasawa, Yasuhiro
Accessrights open access
Rights
  • en Faraday Discuss., 2012, 162, 165-177 - Reproduced by permission of The Royal Society of Chemistry (RSC)
Subject
  • NDC 431
Description
  • Abstract en Three-dimensional Au structures on bare and organic-compound-modified TiO2(110) surfaces were interrogated by Au L-3-edge polarization dependent total reflection fluorescence X-ray absorption fine structure (PTRF-XAFS) spectroscopy. On the bare TiO2(110) surface, icosahedral Au-55 nanoclusters were the main product found. When the surfaces were modified with ortho or meso mercaptobenzoic acid (o-MBA or m-MBA), Au was atomically dispersed. Sulfur atoms in the o- and m-MBA formed strong covalent bonds with Au to produce stable Au-MBA (o-and m-forms) surface complexes. On the other hand, only oxygen atoms on the surface did not make a strong enough interaction to stabilize the Au species. We discuss how the Au species formed on the modified TiO2(110) surface and the possibility to control the Au structure by the surface modification method.
Publisher en Royal Society of Chemistry
Date
    Issued2012-12-18
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/54029
Relation
  • isVersionOf DOI https://doi.org/10.1039/c2fd20131c
Journal
    • PISSN 1359-6640
      • en Faraday Discussions
      • Volume Number162 Page Start165 Page End177
File
Oaidate 2023-07-26