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Coadsorption of Dioxygen and Water on the Ni(110) Surface : Role of O-.Type Species in the Dissociation of Water

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dc.contributor.author Kulkarni, G U
dc.contributor.author Rao, C N R
dc.contributor.author Roberts, M W
dc.date.accessioned 2012-11-27T11:04:52Z
dc.date.available 2012-11-27T11:04:52Z
dc.date.issued 1995
dc.identifier 0743-7463 en_US
dc.identifier.citation Langmuir 11(7), 2572–2575 (1995) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1103
dc.description Restricted Access en_US
dc.description.abstract While the adsorption of dioxygen at a clean Ni(110) surface gives rise to two O(1s) features at 531 and 530 eV assigned to O-(a) and O2-(a) type species respectively, coadsorption of dioxygen and water mixtures result in the additional formation of hydroxyl species characterized by an O(1s) peak at 532.3 eV. The latter is attributed to the oxygen induced dissociation of water via a low energy pathway involving the O-(a)-type species. The proportions of the O-(a) and the hydroxyl species are greater for small O-2/H2O ratios and lower temperatures (120 K). With increase in temperature, the relative surface concentrations of the O-(a) and the hydroxyl species decrease while there is an increase in the concentration of the oxidic O2-(a) species. Thus, the surface concentrations of both the hydroxyl and the O2-(a) species depend critically on the presence of O- type species. Above 300K the surface chemistry in the main involves the conversion of O- to O2- species via the hydroxyl species. en_US
dc.description.uri http://dx.doi.org/10.1021/la00007a041 en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.rights © 1995 American Chemical Society en_US
dc.subject Metal-Surfaces en_US
dc.subject H2o Adsorption en_US
dc.subject Oxygen en_US
dc.subject Defects en_US
dc.subject Oxide en_US
dc.subject Xps en_US
dc.title Coadsorption of Dioxygen and Water on the Ni(110) Surface : Role of O-.Type Species in the Dissociation of Water en_US
dc.type Article en_US


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