Home > Publications database > Concentration and chemical-state profiles at heterogeneous interfaces with sub-nm accuracy from standing-wave ambient-pressure photoemission > print

001     201869
005     20210129215934.0
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100 1 _ |a Nemšák, Slavomír
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245 _ _ |a Concentration and chemical-state profiles at heterogeneous interfaces with sub-nm accuracy from standing-wave ambient-pressure photoemission
260 _ _ |a London
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520 _ _ |a Heterogeneous processes at solid/gas, liquid/gas and solid/liquid interfaces are ubiquitous in modern devices and technologies but often difficult to study quantitatively. Full characterization requires measuring the depth profiles of chemical composition and state with enhanced sensitivity to narrow interfacial regions of a few to several nm in extent over those originating from the bulk phases on either side of the interface. We show for a model system of ​NaOH and ​CsOH in an ~1-nm thick hydrated layer on α-Fe2O3 (haematite) that combining ambient-pressure X-ray photoelectron spectroscopy and standing-wave photoemission spectroscopy provides the spatial arrangement of the bulk and interface chemical species, as well as local potential energy variations, along the direction perpendicular to the interface with sub-nm accuracy. Standing-wave ambient-pressure photoemission spectroscopy is thus a very promising technique for measuring such important interfaces, with relevance to energy research, heterogeneous catalysis, electrochemistry, and atmospheric and environmental science.
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700 1 _ |a Shavorskiy, Andrey
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700 1 _ |a Karslioglu, Osman
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700 1 _ |a Zegkinoglou, Ioannis
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700 1 _ |a Rattanachata, Arunothai
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700 1 _ |a Conlon, Catherine S.
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700 1 _ |a Keqi, Armela
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700 1 _ |a Greene, Peter K.
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700 1 _ |a Burks, Edward C.
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700 1 _ |a Salmassi, Farhad
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700 1 _ |a Gullikson, Eric M.
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700 1 _ |a Yang, See-Hun
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700 1 _ |a Liu, Kai
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700 1 _ |a Bluhm, Hendrik
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700 1 _ |a Fadley, Charles S.
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773 _ _ |a 10.1038/ncomms6441
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