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CO2 adsorption on the bimetallic Zn-on-Cu(1 1 0) system |
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| Authors: | S Funk U Burghaus G Bozzolo JE Garcés |
| Institution: | a Department of Chemistry, Biochemistry, and Molecular Biology, North Dakota State University, 1231 Albrecht Blv, Ladd Hall, Fargo, ND 58105, USA b Ohio Aerospace Institute, 22800 Cedar Point Rd., Cleveland, OH 44142, USA c NASA Glenn, Research Center, Cleveland, OH 44135, USA d Centro Atómico Bariloche, CNEA, 8400 Bariloche, Argentina |
| Abstract: | Adsorption probability measurements (molecular beam scattering) have been conducted to examine the adsorption dynamics (i.e. the gas-surface energy transfer processes) of CO2 adsorption on the Zn-on-Cu(1 1 0) bimetallic system. The results indicate surface alloy formation, which is in agreement with prior studies. Depositing Zn at 300 K on Cu(1 1 0), above the condensation temperature of CO2, leads to a “blocking” of CO2 adsorption sites by Zn which is incorporated in the Cu(1 1 0) surface. This apparent site blocking effect indicates a lowering of the CO2 binding energy on the alloyed surface as compared with the clean Cu(1 1 0) support. The Zn coverage has been calibrated by Auger electron spectroscopy and thermal desorption spectroscopy. |
| Keywords: | Molecular beam scattering CO2 ZnCu surface alloy Cu(1 1 0) support |
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