Influence of Different Anions on the Surface Composition of Ionic Liquids Studied Using ARXPS

2009 ◽  
Vol 113 (25) ◽  
pp. 8682-8688 ◽  
Author(s):  
C. Kolbeck ◽  
T. Cremer ◽  
K. R. J. Lovelock ◽  
N. Paape ◽  
P. S. Schulz ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Surface Composition

Insights into the surface composition and enrichment effects of ionic liquids and ionic liquid mixtures

2010 ◽  
Vol 12 (8) ◽  
pp. 1905 ◽  
Author(s):  
F. Maier ◽  
T. Cremer ◽  
C. Kolbeck ◽  
K. R. J. Lovelock ◽  
N. Paape ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Surface Composition ◽  
Liquid Mixtures

Surface Composition/Organization of Ionic Liquids with Au Nanoparticles Revealed by High-Sensitivity Low-Energy Ion Scattering

Langmuir ◽  
2013 ◽  
Vol 29 (46) ◽  
pp. 14301-14306 ◽  
Author(s):  
Alan Kauling ◽  
Günter Ebeling ◽  
Jonder Morais ◽  
Agílio Pádua ◽  
Thomas Grehl ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Au Nanoparticles ◽  
Surface Composition ◽  
High Sensitivity ◽  
Low Energy ◽  
Ion Scattering ◽  
Low Energy Ion Scattering

Functionalized Ionic Liquids Sputter Decorated with Pd Nanoparticles

2019 ◽  
Vol 72 (2) ◽  
pp. 49 ◽  
Author(s):  
Muhammad I. Qadir ◽  
Alan Kauling ◽  
Günter Ebeling ◽  
Michael Fartmann ◽  
Thomas Grehl ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Palladium Nanoparticles ◽  
Surface Composition ◽  
Ion Pairs ◽  
High Sensitivity ◽  
Pd Nanoparticles ◽  
Low Energy ◽  
Ion Scattering ◽  
Sputtering Deposition ◽  
Low Energy Ion Scattering

The fabrication of surface clean palladium nanoparticles of 3–4nm was accomplished in imidazolium-based functionalized ionic liquids (ILs) having methoxy, cyano, and thio groups by magnetron sputtering deposition. The size of the NPs was strongly dependent on the surface composition and/or organisation of the ILs. The NP growth apparently occurred preferentially in the bulk of the fluids, whereas nucleation apparently occurred preferentially at the IL surface. Smaller NPs were detected close to the methoxy containing IL surface and were covered by at least one layer of IL ion pairs, as revealed by high-sensitivity low-energy ion scattering (HS-LEIS) measurements.

scholarly journals Back Cover: Influence of Substituents and Functional Groups on the Surface Composition of Ionic Liquids (Chem. Eur. J. 14/2014)

2014 ◽  
Vol 20 (14) ◽  
pp. 4172-4172
Author(s):  
Claudia Kolbeck ◽  
Inga Niedermaier ◽  
Alexey Deyko ◽  
Kevin R. J. Lovelock ◽  
Nicola Taccardi ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Functional Groups ◽  
Surface Composition ◽  
Back Cover ◽  
Influence Of Substituents

Influence of Substituents and Functional Groups on the Surface Composition of Ionic Liquids

2014 ◽  
Vol 20 (14) ◽  
pp. 3954-3965 ◽  
Author(s):  
Claudia Kolbeck ◽  
Inga Niedermaier ◽  
Alexey Deyko ◽  
Kevin R. J. Lovelock ◽  
Nicola Taccardi ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Functional Groups ◽  
Surface Composition ◽  
Influence Of Substituents

Influence of Different Substituents on the Surface Composition of Ionic Liquids Studied Using ARXPS

2009 ◽  
Vol 113 (9) ◽  
pp. 2854-2864 ◽  
Author(s):  
K. R. J. Lovelock ◽  
C. Kolbeck ◽  
T. Cremer ◽  
N. Paape ◽  
P. S. Schulz ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Surface Composition

Preferential Sputtering of Ni3Al Single Crystals Studied Using Atom-Probe Field-Ion Microscopy and XPS

1981 ◽  
Vol 39 ◽  
pp. 16-17
Author(s):  
M.P. Thomas ◽  
A.R. Waugh ◽  
M.J. Southon ◽  
Brian Ralph
Keyword(s):  
Single Crystals ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Depth Profiling ◽  
Analytical Techniques ◽  
Atom Probe ◽  
Probe Field ◽  
Preferential Sputtering ◽  
Argon Ion Bombardment ◽  
Argon Ion

It is well known that ion-induced sputtering from numerous multicomponent targets results in marked changes in surface composition (1). Preferential removal of one component results in surface enrichment in the less easily removed species. In this investigation, a time-of-flight atom-probe field-ion microscope A.P. together with X-ray photoelectron spectroscopy XPS have been used to monitor alterations in surface composition of Ni3Al single crystals under argon ion bombardment. The A.P. has been chosen for this investigation because of its ability using field evaporation to depth profile through a sputtered surface without the need for further ion sputtering. Incident ion energy and ion dose have been selected to reflect conditions widely used in surface analytical techniques for cleaning and depth-profiling of samples, typically 3keV and 1018 - 1020 ion m-2.

What catalysis needs from the electron microscopist

1988 ◽  
Vol 46 ◽  
pp. 694-695
Author(s):  
Alexis T. Bell
Keyword(s):  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Catalyst Deactivation ◽  
Surface Composition ◽  
Internal Surface ◽  
Active Phase ◽  
Atomic Scale ◽  
Metal Catalyst ◽  
Internal Surface Area ◽  
Porous Support

Heterogeneous catalysts, used in industry for the production of fuels and chemicals, are microporous solids characterized by a high internal surface area. The catalyticly active sites may occur at the surface of the bulk solid or of small crystallites deposited on a porous support. An example of the former case would be a zeolite, and of the latter, a supported metal catalyst. Since the activity and selectivity of a catalyst are known to be a function of surface composition and structure, it is highly desirable to characterize catalyst surfaces with atomic scale resolution. Where the active phase is dispersed on a support, it is also important to know the dispersion of the deposited phase, as well as its structural and compositional uniformity, the latter characteristics being particularly important in the case of multicomponent catalysts. Knowledge of the pore size and shape is also important, since these can influence the transport of reactants and products through a catalyst and the dynamics of catalyst deactivation.

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