Abstract
The high catalytic activity of gold clusters on oxides has been attributed to structural effects (including particle thickness and shape and metal oxidation state), as well as to support effects. We have created well-ordered gold mono-layers and bilayers that completely wet (cover) the oxide support, thus eliminating particle shape and direct support effects. High-resolution electron energy loss spectroscopy and carbon monoxide adsorption confirm that the gold atoms are bonded to titanium atoms. Kinetic measurements for the catalytic oxidation of carbon monoxide show that the gold bilayer structure is significantly more active (by more than an order of magnitude) than the monolayer.
Keywords
Carbon monoxideMonolayerBilayerAdsorptionCatalysisColloidal goldMetalOxideMaterials scienceChemistryInorganic chemistryChemical physicsNanotechnologyNanoparticlePhysical chemistryMetallurgyOrganic chemistryMembrane
Affiliated Institutions
Related Publications
Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation
Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identi...
CO Oxidation on Rutile‐Supported Au Nanoparticles
What makes inert gold active? The answer lies in controlling the structure of Au particles at the nanoscale: Either many interface sites or many low-coordinate Au atoms need to ...
Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles
Metal species with different size (single atoms, nanoclusters, and nanoparticles) show different catalytic behavior for various heterogeneous catalytic reactions. It has been sh...
Electronic Structure Controls Reactivity of Size-Selected Pd Clusters Adsorbed on TiO <sub>2</sub> Surfaces
Cluster Electronics and Catalysis Many practical catalysts consist of small metal clusters on oxide supports, and the activity of these clusters usually varies with their size. ...
Adsorption of Gases on Complex Solid Surfaces
Abstract During the last thirty years the research field of surface science with its various disciplines has progressively played a more and more important role in the field of ...
Publication Info
- Year
- 2004
- Type
- article
- Volume
- 306
- Issue
- 5694
- Pages
- 252-255
- Citations
- 1606
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
1606
OpenAlex
Cite This
Mingshu Chen,
D. Wayne Goodman
(2004).
The Structure of Catalytically Active Gold on Titania.
Science
, 306
(5694)
, 252-255.
https://doi.org/10.1126/science.1102420
Identifiers
- DOI
- 10.1126/science.1102420