Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 19, Pages 7445-7454Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp711097j
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The adsorption and dissociation of water on a Ru(0001) surface containing a small amount (<= 3%) of carbon impurities was studied by scanning tunneling microscopy (STM). Various surface species are formed depending on the temperature. These include molecular H2O, H2O-C complexes, H, O, CH, and CH. Clusters of either pure H2O or mixed H2O-OH species are also formed. Each of these species produces a characteristic contrast in the STM images and can be identified by experiment and by ab initio total energy calculations coupled with STM image simulations. Manipulation of individual species via excitation of vibrational modes with the tunneling electrons was used as supporting evidence.
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