Dissociation of carbon monoxide on stepped nickel surfaces |
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| Authors: | Z. Murayama I. Kojima E. Miyazaki I. Yasumori |
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| Affiliation: | Department of Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan |
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| Abstract: | Field emission microscopy with photometric measurements has been applied to investigate the adsorption of carbon monoxide on various crystal planes of a nickel field emitter. Upon heating the CO-covered surface, the work function drastically decreased during desorption of CO molecules into the gas phase and exhibited almost the value of the clean surface at 450 K. However, part of the CO molecules adsorbed on the stepped planes such as (510) and (310) were found to dissociate upon heating at 450–470 K, which was accompanied by an increase of the work function of ～0.2 eV. |
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| Keywords: | To whom correspondence should be addressed. |
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