Davies, Philip Rosser ![]() |
Abstract
The oxidation of aniline at Cu(1 1 0) surfaces at 290 K has been studied by XPS and STM. A single chemisorbed product, assigned to a phenyl imide (C6H5N(a)), is formed together with water which desorbs. Reaction with preadsorbed oxygen results in a maximum surface concentration of phenyl imide of 2.8 × 1014 mol cm−2 and a surface dominated by domains of three structures described by , and unit meshes. However, concentrations of phenyl imide of up to 3.3 × 1014 mol cm−2 were obtained from the coadsorption of aniline and dioxygen (300:1 mixture) resulting in a highly ordered biphasic structure with and domains. Comparison of the STM and XPS data shows that only half the phenyl imides at the surface are imaged. Pi-stacking of the phenyl rings is proposed to account for this observation.
Item Type: | Article |
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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; Aromatics; Low index single crystal surfaces |
Publisher: | Elsevier |
ISSN: | 0039-6028 |
Last Modified: | 18 Oct 2022 12:35 |
URI: | https://orca.cardiff.ac.uk/id/eprint/10378 |
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