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Chemisorption and reaction of phenyl iodide at Cu(110) surfaces: a combined STM and XPS study

Carley, Albert Frederick, Coughlin, Mark, Davies, Philip Rosser ORCID:, Morgan, David John ORCID: and Roberts, Meirion Wyn 2004. Chemisorption and reaction of phenyl iodide at Cu(110) surfaces: a combined STM and XPS study. Surface Science 555 (1-3) , L138-L142. 10.1016/j.susc.2004.03.005

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The chemisorption of phenyl iodide at a Cu(1 1 0) surface at 295 K has been studied with STM and XPS. Dissociative adsorption leads to chemisorbed iodine, which the STM shows to have a c(2 × 2) structure, and adsorbed phenyl groups which appear in the STM images as roughly circular features, approximately 0.7 nm in diameter and 0.1 nm above the iodine adlayer. The phenyl groups are stabilised at the top and bottom of step edges forming chains with a regular inter-phenyl spacing of 1.0 nm. Chains are also observed on the terraces but here they are usually “paired” in the 〈1 0 0〉 direction. From a comparison of the phenyl and iodine structures the adsorption site of the phenyl rings is shown to be either the two fold hollows or the atop sites with each ring blocking approximately four iodine adsorption sites.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: X-ray photoelectron spectroscopy; Scanning tunneling microscopy; Chemisorption; Surface structure, morphology, roughness, and topography; Copper; Iodine; Aromatics; Low index single crystal surfaces
Publisher: Elsevier
ISSN: 0039-6028
Last Modified: 18 Oct 2022 12:26

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