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  Following the microscopic pathway to adsorption through chemisorption and physisorption wells

Borodin, D., Rahinov, I., Shirhatti, P. R., Huang, M., Kandratsenka, A., Auerbach, D. J., et al. (2020). Following the microscopic pathway to adsorption through chemisorption and physisorption wells. Science, 369(6510), 1461-1465. doi:10.1126/science.abc9581.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-4E5B-D Version Permalink: http://hdl.handle.net/21.11116/0000-0007-4FE3-1
Genre: Journal Article

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Borodin, D.1, Author              
Rahinov, I., Author
Shirhatti, P. R., Author
Huang, M., Author
Kandratsenka, A.1, Author              
Auerbach, D. J.1, Author              
Zhong, T.1, Author              
Guo, H., Author
Schwarzer, D.1, Author              
Kitsopoulos, T. N.1, Author              
Wodtke, Alec M.2, Author              
Affiliations:
1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_persistent22              
2Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              

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 Abstract: Adsorption involves molecules colliding at the surface of a solid and losing their incidence energy by traversing a dynamical pathway to equilibrium. The interactions responsible for energy loss generally include both chemical bond formation (chemisorption) and nonbonding interactions (physisorption). In this work, we present experiments that revealed a quantitative energy landscape and the microscopic pathways underlying a molecule’s equilibration with a surface in a prototypical system: CO adsorption on Au(111). Although the minimum energy state was physisorbed, initial capture of the gas-phase molecule, dosed with an energetic molecular beam, was into a metastable chemisorption state. Subsequent thermal decay of the chemisorbed state led molecules to the physisorption minimum. We found, through detailed balance, that thermal adsorption into both binding states was important at all temperatures.

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Language(s): eng - English
 Dates: 2020-09-182020-09-18
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1126/science.abc9581
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Title: Science
Source Genre: Journal
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Pages: - Volume / Issue: 369 (6510) Sequence Number: - Start / End Page: 1461 - 1465 Identifier: -