Nanoclusters of TiO2 wetted with gold

K. T. Park; V. Meunier; M. H. Pan; W. A. Shelton; N. H. Yu; E. W. Plummer

doi:10.1016/j.susc.2009.08.028

Nanoclusters of TiO₂ wetted with gold

K. T. Park, V. Meunier, M. H. Pan, W. A. Shelton, N. H. Yu, E. W. Plummer

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We combined scanning tunneling microscopy and density functional theory to establish the structure-functionality relationship for nanometer-sized defects on TiO₂(1 1 0). Three-angstrom high topographically distinct dots are ascribed to stoichiometric TiO₂ nanoclusters with low coordination numbers. The under-coordinated O atoms of the nanocluster, with surface O atoms, provide exceptionally strong binding sites for Au nanoparticles. Our atomistic model elucidates a number of characteristics salient to low temperature CO oxidation by Au nanoparticles.

Original language	English (US)
Pages (from-to)	3131-3135
Number of pages	5
Journal	Surface Science
Volume	603
Issue number	20
DOIs	https://doi.org/10.1016/j.susc.2009.08.028
State	Published - Oct 15 2009

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2009.08.028

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title = "Nanoclusters of TiO2 wetted with gold",

abstract = "We combined scanning tunneling microscopy and density functional theory to establish the structure-functionality relationship for nanometer-sized defects on TiO2(1 1 0). Three-angstrom high topographically distinct dots are ascribed to stoichiometric TiO2 nanoclusters with low coordination numbers. The under-coordinated O atoms of the nanocluster, with surface O atoms, provide exceptionally strong binding sites for Au nanoparticles. Our atomistic model elucidates a number of characteristics salient to low temperature CO oxidation by Au nanoparticles.",

author = "Park, {K. T.} and V. Meunier and Pan, {M. H.} and Shelton, {W. A.} and Yu, {N. H.} and Plummer, {E. W.}",

note = "Funding Information: This research was sponsored by the Scientific User Facilities Division and also by the Division of Materials Science (DE AC05-00OR22725 contracted with UT-Battelle, LLC), Department of Energy. The computations were performed using the resources of the National Center for Computational Sciences at ORNL. ",

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TY - JOUR

T1 - Nanoclusters of TiO2 wetted with gold

AU - Park, K. T.

AU - Meunier, V.

AU - Pan, M. H.

AU - Shelton, W. A.

AU - Yu, N. H.

AU - Plummer, E. W.

N1 - Funding Information: This research was sponsored by the Scientific User Facilities Division and also by the Division of Materials Science (DE AC05-00OR22725 contracted with UT-Battelle, LLC), Department of Energy. The computations were performed using the resources of the National Center for Computational Sciences at ORNL.

PY - 2009/10/15

Y1 - 2009/10/15

N2 - We combined scanning tunneling microscopy and density functional theory to establish the structure-functionality relationship for nanometer-sized defects on TiO2(1 1 0). Three-angstrom high topographically distinct dots are ascribed to stoichiometric TiO2 nanoclusters with low coordination numbers. The under-coordinated O atoms of the nanocluster, with surface O atoms, provide exceptionally strong binding sites for Au nanoparticles. Our atomistic model elucidates a number of characteristics salient to low temperature CO oxidation by Au nanoparticles.

AB - We combined scanning tunneling microscopy and density functional theory to establish the structure-functionality relationship for nanometer-sized defects on TiO2(1 1 0). Three-angstrom high topographically distinct dots are ascribed to stoichiometric TiO2 nanoclusters with low coordination numbers. The under-coordinated O atoms of the nanocluster, with surface O atoms, provide exceptionally strong binding sites for Au nanoparticles. Our atomistic model elucidates a number of characteristics salient to low temperature CO oxidation by Au nanoparticles.

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DO - 10.1016/j.susc.2009.08.028

M3 - Article

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SP - 3131

EP - 3135

JO - Surface Science

JF - Surface Science

IS - 20

ER -

Nanoclusters of TiO₂ wetted with gold

Abstract

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