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A low energy pathway to CuCl2 at Cu(110) surfaces

Carley, Albert Frederick, Davies, Philip Rosser, Harikumar, Krishnan R. and Jones, Rhys Vaughan 2009. A low energy pathway to CuCl2 at Cu(110) surfaces. Physical Chemistry Chemical Physics 11 (46) , pp. 10899-10907. 10.1039/b914970h

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The reaction of hydrogen chloride gas with partially oxidised Cu(110) surfaces follows a different structural pathway than its reaction with a clean surface. In the latter case a c(2x2)Cl structure develops which is compressed in the [110] direction for chlorine atom concentrations greater than 5.5x1014 cm-2. In contrast, the presence of oxygen leads to the formation of linear‘‘Cl-chains’’ orientated in the [100] direction which closely resemble those of bulk CuCl2. These Cu(II) like structures are unstable at room temperature decomposing to form c(2x2)Cl. Using XPS and STM we have investigated the formation of the CuCl2 like surface species and propose that it derives from the unusual reactivity of transient copper adatoms released from the p(2x1)O by the exothermic formation of water.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1463-9076
Last Modified: 26 Oct 2021 01:17

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