Photodesorption and photochemical dynamics on roughened silver: Sulphur dioxide and carbonyl sulphide

Burke, Daren J., Vondrak, Tomas and Meech, Stephen R. (2005) Photodesorption and photochemical dynamics on roughened silver: Sulphur dioxide and carbonyl sulphide. Surface Science, 585 (1-2). pp. 123-133. ISSN 0039-6028

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Abstract

The photodesorption of SO2, both monolayer and multilayer, from roughened silver has been investigated. The photodesorption cross-section is enhanced by a factor of 2.6 +/- 0.4 compared to the Ag(111) surface. The peak in the enhancement occurs at 340 nm. Time-of-flight mass spectrometry shows that the same mechanism operates on both the rough and Ag(111) surfaces. Coverage dependent experiments show that the enhancement is a first layer phenomenon, and coverage of greater than one monolayer effectively suppresses photodesorption. These data point to a surface plasmon resonance enhanced substrate mediated (hot electron attachment) photodesorption mechanism. (c) 2005 Elsevier B.V. All rights reserved.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 26 Jul 2011 15:31
Last Modified: 17 Sep 2020 23:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/34183
DOI: 10.1016/j.susc.2005.04.020

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