Size- and support-dependent electronic and catalytic properties of Au 0/Au3+ nanoparticles synthesized from block copolymer micelles

Cuenya, B. Roldan, Baeck, Sung-Hyeon, Jaramillo, Thomas F. and McFarland, Eric W. (2003) Size- and support-dependent electronic and catalytic properties of Au 0/Au3+ nanoparticles synthesized from block copolymer micelles. Journal of the American Chemical Society, 125 42: 12928-12934. doi:10.1021/ja036468u


Author Cuenya, B. Roldan
Baeck, Sung-Hyeon
Jaramillo, Thomas F.
McFarland, Eric W.
Title Size- and support-dependent electronic and catalytic properties of Au 0/Au3+ nanoparticles synthesized from block copolymer micelles
Formatted title
Size- and support-dependent electronic and catalytic properties of Au0/Au3+ nanoparticles synthesized from block copolymer micelles
Journal name Journal of the American Chemical Society   Check publisher's open access policy
ISSN 0002-7863
1520-5126
Publication date 2003-10-01
Sub-type Article (original research)
DOI 10.1021/ja036468u
Open Access Status Not yet assessed
Volume 125
Issue 42
Start page 12928
End page 12934
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
Supported Au nanoclusters synthesized from diblock copolymer micelles can be reliably prepared with well-controlled sizes and dispersions. For particles with diameters between approximately 1 and 6 nm, the particle size and the support were found to strongly influence the oxygen reactivity, the formation and stabilization of a metal-oxide, and the catalytic activity for electrooxidation of carbon monoxide. The smallest particles studied (1.5 nm) were the most active for electrooxidation of CO and had the largest fraction of oxygen associated with gold at the surface as measured by the Au3+/Au0 X-ray photoemission intensities. Conducting and semiconducting substrates, ITO-coated glass and TiO2, respectively, were associated with greater stabilization of Au3+ oxide as compared to insulating, SiO2, substrates.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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