About charging and referencing of core level data obtained from X-ray photoelectron spectroscopy analysis of the ionic liquid/ultrahigh vacuum interface

2018 ◽  
Vol 224 ◽  
pp. 51-58 ◽  
Author(s):  
A. Foelske-Schmitz ◽  
M. Sauer
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Ultrahigh Vacuum ◽  
Core Level ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Level Data ◽  
Vacuum Interface

Adsorption and reaction of sub-monolayer films of an ionic liquid on Cu(111)

2014 ◽  
Vol 50 (62) ◽  
pp. 8601-8604 ◽  
Author(s):  
Benedikt Uhl ◽  
Florian Buchner ◽  
Stephan Gabler ◽  
Maral Bozorgchenani ◽  
R. Jürgen Behm
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Ultrahigh Vacuum ◽  
Scanning Tunnelling Microscopy ◽  
Monolayer Films ◽  
X Ray ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Reactive Interaction

The reactive interaction of the ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [BMP][TFSA] with Cu(111) was investigated by scanning tunnelling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) under ultrahigh vacuum (UHV) conditions.

Characterization of an Extended Reactive Noble-Metal/III-V Semiconductor Interface: Cu/GaAs(110)

1985 ◽  
Vol 54 ◽  
Author(s):  
J. J. Joyce ◽  
J. H. Weaver
Keyword(s):  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Earth Metal ◽  
Core Level ◽  
Spectroscopy Analysis ◽  
Semiconductor Interface ◽  
Band Bending ◽  
Level Data ◽  
Initial Intensity

ABSTRACTWe examine the electronic structure of the Cu/GaAs(110) interface using high resolution synchrotron radiation photoelectron spectroscopy. Analysis of valence band and core level spectra indicate that a reactive, extended interface is formed when Cu is deposited on the cleaved GaAs(110) surface at room temperature. Arsenic 3d core level data show a single reacted component shifted 500 meV to lower binding energy while the Ga 3d core shows a reacted component shifted by 800 meV below the substrate position. Core level attenuation curves indicate preferential As outdiffusion with the As signal at 30% of initial intensity for 100 ML of Cu while the Ga intensity for the same coverage has dropped to 2% of initial intensity. Band bending results show two separate regions of interest with a secondary pinning position 775 meV below the CBM for n-type GaAs. Results are discussed in light of thermodynamic and electronegativity parameters as well as other transition and rare-earth metal GaAs interfaces.

Core Level Data of Ionic Liquids: Monitoring Charging by In Situ Electrochemical X-ray Photoelectron Spectroscopy

2013 ◽  
Vol 2 (4) ◽  
pp. H13-H15 ◽  
Author(s):  
A. Foelske-Schmitz ◽  
D. Weingarth ◽  
A. Wokaun ◽  
R. Kotz
Keyword(s):  
Ionic Liquids ◽  
Photoelectron Spectroscopy ◽  
Core Level ◽  
X Ray ◽  
Level Data

SiO2 films as heat resistant layers for protection of expandable polystyrene foam from flame torch–induced heat

2017 ◽  
Vol 31 (5) ◽  
pp. 657-667 ◽  
Author(s):  
S Varnagiris ◽  
S Tuckute ◽  
M Lelis ◽  
D Milcius
Keyword(s):  
Heat Resistance ◽  
Photoelectron Spectroscopy ◽  
Silicon Oxide ◽  
Plasma Generator ◽  
Expanded Polystyrene ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Heat Resistant ◽  
Pulsed Dc ◽  
Gas Atmosphere

Currently, polymeric insulation materials are widely used for energy saving in buildings. Despite of all benefits, these materials are generally sensitive to heat and highly flammable. This work discusses possibility to improve heat resistance of expanded polystyrene (EPS) foam using thin silicon dioxide (SiO2) films deposited by magnetron sputtering technique. In order to increase surface energy and adherence of SiO2 thin films to substrate EPS was plasma pretreated before films’ depositions using pulsed DC plasma generator for 40 s in argon gas. SiO2 formation was done in reactive argon and oxygen gas atmosphere. Laboratory made equipment was used for flame torch–induced heat resistance experiments. Results showed that silicon oxide films remains stable during heat resistance experiments up to 5 s and fully protects polystyrene (PS) substrate. Films are relatively stable for 30 s and 60 s and partially protect PS from melting and ignition. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis confirmed that SiO2 layer, which is distributed uniformly on the EPS surface, could work as a good heat resistant material.

scholarly journals On the prediction of core level binding energies in molecules, surfaces and solids

2018 ◽  
Vol 20 (13) ◽  
pp. 8403-8410 ◽  
Author(s):  
Francesc Viñes ◽  
Carmen Sousa ◽  
Francesc Illas
Keyword(s):  
Photoelectron Spectroscopy ◽  
State Of The Art ◽  
Binding Energies ◽  
Core Level ◽  
Chemical Environment ◽  
X Ray ◽  
Unique Information

Core level binding energies, measured by X-ray photoelectron spectroscopy providing unique information regarding the chemical environment of atoms in a system, can be estimated by a diversity of state-of-the-art accurate methods here detailed.

Effect of Sodium Metabisulfite on Selective Flotation of Chalcopyrite and Molybdenite

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1377
Author(s):  
Yuki Semoto ◽  
Gde Pandhe Wisnu Suyantara ◽  
Hajime Miki ◽  
Keiko Sasaki ◽  
Tsuyoshi Hirajima ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Separation Efficiency ◽  
Diesel Oil ◽  
Sodium Metabisulfite ◽  
Depressing Effect ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Selective Flotation

Sodium metabisulfite (MBS) was used in this study for selective flotation of chalcopyrite and molybdenite. Microflotation tests of single and mixed minerals were performed to assess the floatability of chalcopyrite and molybdenite. The results of microflotation of single minerals showed that MBS treatment significantly depressed the floatability of chalcopyrite and slightly reduced the floatability of molybdenite. The results of microflotation of mixed minerals demonstrated that the MBS treatment could be used as a selective chalcopyrite depressant in the selective flotation of chalcopyrite and molybdenite. Furthermore, the addition of diesel oil or kerosene could significantly improve the separation efficiency of selective flotation of chalcopyrite and molybdenite using MBS treatment. A mechanism based on X-ray photoelectron spectroscopy analysis results is proposed in this study to explain the selective depressing effect of MBS on the flotation of chalcopyrite and molybdenite.

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