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Cited by 451

The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

Coadsorption of CO and O2 on Selected Gold Clusters: Evidence for Efficient Room-Temperature CO2 Generation

Wallace, William T., Whetten, Robert L.·2002·Journal of the American Chemical Society
DOI 10.1021/ja0175439
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Abstract

Spurred by the recent demonstrations of the size- and support-dependent reactivity of supported gold clusters, here we present results on the coadsorption of CO and O(2) on selected anionic gold clusters, Au(N)(-), in the gas phase. O(2) adsorbs in a binary (0,1) fashion as a one-electron acceptor on the Au(N)()(-) clusters, with even-N clusters showing varying reactivity toward O(2) adsorption, while odd-N clusters show no evidence of reactivity. CO shows a highly size-dependent reactivity for Au(N)(-) sizes from N = 4 to 19, but no adsorption on the gold dimer or trimer. When the gold clusters are exposed to both reactants, either simultaneously or sequentially, interesting effects have been observed. While the same rules pertaining to individual O(2) or CO adsorption continue to apply, the preadsorption of one reactant on a cluster may lead to the increased reactivity of the cluster to the other reactant. Thus, the adsorbates are not competing for bonding sites (competitive coadsorption), but, instead, aid in the adsorption of one another (cooperative coadsorption). New peaks also arise in the mass spectrum of Au(6)(-) under CO and O(2) coadsorption conditions, which can be attributed to the loss of a CO(2) molecule (or molecules). By studying the relative amount of reaction, and relating it to the reaction time, it is found that the gas-phase Au(6) anion is capable of oxidizing CO at a rate 100 times that reported for commercial or model gold catalysts.

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Metadata

Authors
Wallace, W. T., & Whetten, R. L.
Venue
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Published
2002-05-29
Volume
124
Issue
25
Pages
7499-7505
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
DOI
10.1021/ja0175439
OpenAlex
W2013280577
Cited by
451
References
10
FWCI
22.69
Type
journal article
Language
en
Open access
closed

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