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Adsorption and temperature-dependent decomposition of SO2 on Cu(100) and Cu(111): A fast and high-resolution core-level spectroscopy study

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Polcik,  Martin
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Wilde,  Lutz
Fritz Haber Institute, Max Planck Society;

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Haase,  J.
Fritz Haber Institute, Max Planck Society;

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PhysRevB.53.13720.pdf
(Publisher version), 120KB

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Citation

Polcik, M., Wilde, L., Haase, J., Brena, B., Cocco, D., Comelli, G., et al. (1996). Adsorption and temperature-dependent decomposition of SO2 on Cu(100) and Cu(111): A fast and high-resolution core-level spectroscopy study. Physical Review B, 53(20), 13 720-13 724. doi:10.1103/PhysRevB.53.13720.


Cite as: https://hdl.handle.net/21.11116/0000-0009-AAFC-C
Abstract
The adsorption and temperature-dependent decomposition of SO2 on Cu(100) and Cu(111) have been studied by fast and high-resolution core-level photoemission. The analysis of the S 2p and O 1s data shows that molecular SO2 adsorption dominates at 170 K. On heating the SO2-covered surfaces to about room temperature, SO2 decomposes into SO+O+S. On further heating SO+O recombine to form SO2, which is the only species detected in corresponding temperature-programmed desorption (TPD) experiments. From the temperature- (time-) dependent S and O coverages a ‘‘TPD curve’’ can be constructed.