Article
A reactive oxide overlayer on rhodium nanoparticles during CO oxidation and its size dependence studied by in situ ambient-pressure X-ray photoelectron spectroscopy
Angewandte Chemie - International Edition
(2008)
Abstract
The smaller, the better: In situ synchrotron ambient pressure X-ray photoelectron spectroscopy allows examination of the oxidation state of the surface of the rhodium nanoparticles (NPs) during CO oxidation in an O2 atmosphere. 2 nm NPs oxidize to a larger extent than 7 nm NPs during reaction at 150-200°C, which correlates with a fivefold increase in turnover frequency for the smaller nanoparticles.
Keywords
- carbon monoxide,
- heterogeneous catalysis,
- nanomaterials,
- rhodium,
- XPS
Disciplines
Publication Date
2008
Publisher Statement
This is the peer reviewed version of the following article: Grass, M.E., Zhang, Y., Butcher, D.R., Park, J.Y., Li, Y., Bluhm, H., Bratlie, K.M., Zhang, T., Somorjai, G.A.
A reactive oxide overlayer on rhodium nanoparticles during CO oxidation and its size dependence studied by in situ ambient-pressure X-ray photoelectron spectroscopy
(2008) Angewandte Chemie - International Edition, 47 (46), pp. 8893-8896, which has been published in final form at http://dx.doi.org/10.1002/anie.200803574. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.
Citation Information
Michael E. Grass, Hendrik Bluhm, Yawen Zhang, Derek Butcher, et al.. "A reactive oxide overlayer on rhodium nanoparticles during CO oxidation and its size dependence studied by in situ ambient-pressure X-ray photoelectron spectroscopy" Angewandte Chemie - International Edition Vol. 47 Iss. 46 (2008) Available at: http://works.bepress.com/kaitlin_bratlie/11/