Abstractive chemisorption of O2 on Al(111)
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Updated: Oct 9, 2026

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Published on: May 11, 2017
M Binetti1, O Weisse, E Hasselbrink
1Fachbereich Chemie, Universität Essen, Germany.
Abstract:
We present experimental evidence that abstraction is a common mechanism (approximately 50%) in the dissociative chemisorption of oxygen on Al(111) at a translational energy of 0.5 eV. As a result of this mechanism, individual isolated O-atoms are observed in scanning tunneling microscopy (STM). At this translational energy ordinary dissociative chemisorption processes also occur, resulting in pairs of adatoms. The ejected O-atoms originating from the abstraction reaction are detected in the gas phase using laser spectrometry. Together, these observations provide compelling evidence for the abstraction mechanism.
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