A comparative scanning tunnelling microscopy study of the adsorption of [RhI(CO)2Cl]2 on the (1×1) and (1×2) surfaces of TiO2[1 1 0]
Bennett, Roger A., Newton, Mark A., Smith, Rupert D., Bowker, Michael and Evans, John (2001) A comparative scanning tunnelling microscopy study of the adsorption of [RhI(CO)2Cl]2 on the (1×1) and (1×2) surfaces of TiO2[1 1 0]. Surface Science, 487, (1-3), 223-230. (doi:10.1016/S0039-6028(01)01101-3)
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Official URL: http://dx.doi.org/10.1016/S0039-6028(01)01101-3
Description/Abstract
The room temperature interaction of [Rh-I(CO)(2)Cl](2) with the (1 x 1) and Ti2O3 added row (1 x 2) terminations of TiO2[1 1 0] has been studied using scanning tunnelling microscopy. Dissociative adsorption of [Rh-I(CO)(2)Cl](2) at the (1 x 1) surface leads to the formation of an adsorbed Rh-I(CO)(2)Cl species that coexists with particulate Rh; the latter forms predominantly at step edges and terrace defects. The saturated Rh-I(CO)(2)Cl layer orders into domains showing a ((1)(-1) (2)(1)) relationship with respect to the underlying (1 x 1) structure. However, adsorption of the Rh organometallic at the Ti2O3 terminated (1 x 2) surface results solely in the formation of metallic Rh: there is no evidence for the formation of a stable Rh-I(CO)(2)Cl species. The difference in surface reactivity between the two TiO2 surfaces is discussed in terms of their differing structure. A mode of adsorption of the Rh-I(CO)(2)Cl species on the (1 x 1) surface and the resulting structure of the geminal dicarbonyl adlayer are proposed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | chemical vapor deposition, low energy electron diffraction (leed), scanning tunneling microscopy, scanning tunneling spectroscopies, catalysis, chemisorption, growth, surface chemical reaction, surface structure, morphology, roughness and topography, oxygen, titanium, rhodium, titanium oxide, low index single crystal surfaces, clusters, rhodium gem-dicarbonyl, tunneling-microscopy, tio2(110) surface, room-temperature, lewis acidity, metal-oxides, co, growth, (2), reactivity |
| Related URLs: | http://dx.doi.org/10.1016/S003...01)01101-3 |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 19404 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19404 |
| Deposited On: | 14 Feb 2006 |
| Last Modified: | 02 Mar 2012 11:45 |
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