2016
DOI: 10.1007/s11244-015-0515-5
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The Environmental Photochemistry of Oxide Surfaces and the Nature of Frozen Salt Solutions: A New in Situ XPS Approach

Abstract: Recent years have witnessed fast advancements in near ambient pressure X-ray photoelectron (NAPP) spectroscopy, which is emerging as a powerful tool for the investigation of surfaces in presence of vapors and liquids. In this paper we present a new chamber for the investigation of solid/vapor interfaces relevant to environmental and atmospheric chemistry that fits to the NAPP endstation at the Swiss Light Source. The new chamber allows for performing X-ray photoelectron spectroscopy (XPS) and electron yield ne… Show more

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Cited by 54 publications
(65 citation statements)
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“…Surface techniques mostly sensitive to interfacial chemical composition need to be explored to validate and interpret interfacial properties of ice nucleation at a molecular level. High-Energy Electron-spectroscopic and X-ray techniques based on photoelectron detection have a penetration depth of 1-2 nm [11,12,26,27]. Chemical titration may be conducted using suitable gas probes for the interrogation of the presence of several types of functional groups at the interface [13].…”
Section: Uncovering the Molecular Identity Of Active Sites For Heteromentioning
confidence: 99%
“…Surface techniques mostly sensitive to interfacial chemical composition need to be explored to validate and interpret interfacial properties of ice nucleation at a molecular level. High-Energy Electron-spectroscopic and X-ray techniques based on photoelectron detection have a penetration depth of 1-2 nm [11,12,26,27]. Chemical titration may be conducted using suitable gas probes for the interrogation of the presence of several types of functional groups at the interface [13].…”
Section: Uncovering the Molecular Identity Of Active Sites For Heteromentioning
confidence: 99%
“…The zeolite powder samples were dispersed in ethanol and drop‐casted as a thin film on a gold foil (Sigma–Aldrich, purity 99.99 %). The gold foil was mounted to the sample holder of the solid–gas interface endstation, which allows measurements at precise pressures with a flow conditions of gas/gas mixtures . The spectra were recorded at 80 °C and 1 mbar of helium (Messer gas, 99.999 % purity) to minimize the charging of the samples.…”
Section: Methodsmentioning
confidence: 99%
“…The gold foil was mounted to the sample holder of the solid-gas interface endstation, which allows measurements at precise pressures with af low conditions of gas/ gas mixtures. [40,41] The spectra were recorded at 80 8Ca nd 1mbar of helium (Messer gas, 99.999 %p urity) to minimize the charging of the samples. Si 2p and Al 2p photoemission spectra were recorded tuning the excitation energies between 480 to 1210 eV, such that for both elements the photoelectron kinetic energies are 400, 600, 800 and 1100 eV.A fter subtraction of aS hirley background, the spectra were fitted with Voigt shaped peaks.…”
Section: Characterization Methodsmentioning
confidence: 99%
“…Orlando et al. describe the design of this chamber in details in Figure shows schematics of the setup. The in situ cell contains a flow tube (3 cm diameter, 15 cm long), which can be connected to the gas dosing system and pressure gauges as well as to a pumping system for fast exchange experiments.…”
Section: Applications Of Apxpsmentioning
confidence: 99%
“…Also, ac hamber with as mall cell volume was developed and used for environmental chemistry and catalytic experiments in the APXPS endstation at Swiss Light Source of the Paul Scherrer Institute (PSI). Orlando et al describe the design of this chamber in detailsi n [ 139] Figure 4s hows schematics of the setup. The in situ cell contains af low tube (3 cm diameter,1 5cml ong), which can be connected to the gas dosing system and pressure gauges as well as to ap umping system for fast exchange experiments.…”
Section: Syngas Conversion To Olefinmentioning
confidence: 99%