Thermal chemistry of water adsorbed on clean and oxygen-predosed V(100) single-crystal surfaces
作者： Min Shen , Francisco Zaera
DOI: 10.1021/JP074274L
关键词: Inorganic chemistry 、 Adsorption 、 Dissociation (chemistry) 、 Hydrogen bond 、 Hydroxide 、 Deuterium 、 Thermal desorption spectroscopy 、 Oxygen 、 Chemistry 、 Desorption
摘要: The adsorption of water on V(100) single-crystal surfaces was characterized by temperature programmed desorption and X-ray photoelectron spectroscopy. On clean surfaces, the determined to be dissociative, dissociation favored at low coverages. With aid deuterium 18O isotope labeling, it found that coadsorbed surface oxygen blocks this but also opens a new reaction channel relies hydrogen bonding enhance generation hydroxide species. is seen throughout all stages uptake, even after formation thin oxide film. Three states were identified in oxygen-treated substrates, corresponding recombination groups, decomposition hydrogen-bonded stabilized water, molecular desorption, respectively.
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