Disclosure of the Surface Composition of TiO2-Supported Gold–Palladium Bimetallic Catalysts by High-Sensitivity Low-Energy Ion Scattering Spectroscopy

ACS Catalysis ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 1790-1795 ◽  
Author(s):  
Yangyang Li ◽  
Jun Hu ◽  
Dongdong Ma ◽  
Yanping Zheng ◽  
Mingshu Chen ◽  
...  
Keyword(s):  
Bimetallic Catalysts ◽  
Surface Composition ◽  
High Sensitivity ◽  
Low Energy ◽  
Ion Scattering ◽  
Low Energy Ion Scattering ◽  
Ion Scattering Spectroscopy ◽  
Supported Gold

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.

Low-Energy Ion Scattering Measurements from an Al-Pd-Mn Quasicrystal

2000 ◽  
Vol 643 ◽  
Author(s):  
R. Bastasz ◽  
C. J. Jenks ◽  
T. A. Lograsso ◽  
A. R. Ross ◽  
P. A. Thiel ◽  
...  
Keyword(s):  
Signal Intensity ◽  
Surface Composition ◽  
Incidence Angle ◽  
Local Environment ◽  
Forward Direction ◽  
Low Energy ◽  
Angle Of Incidence ◽  
Fold Axis ◽  
Ion Scattering ◽  
Low Energy Ion Scattering

AbstractEnergy-angle distributions of low-energy inert-gas ions scattered from surfaces provide information about surface composition and structure. We have measured energy spectra of He+ scattered from an Al71Pd20Mn9 quasicrystal, which was oriented perpendicular to the 5-fold axis, along various azimuthal directions. Strong scattering signals are seen from Al and Pd, but only a weak Mn signal is observed. From measurements made of He+ at an oblique angle of incidence scattered in the forward direction, we observe a 72° periodicity in the azimuthal dependence of the scattering signal intensity from Al surface atoms. The effect arises from shadowing effects involving neighboring surface atoms and provides direct evidence that Al surface atoms exist in a local environment with 5-fold symmetry. In addition, measuring the variation of the signal intensity with incidence angle provides information about neighboring atom distances, which compare favorably with a model of the quasicrystal surface derived from the bulk structure.

Zinc and copper, by high sensitivity-low energy ion scattering

2021 ◽  
Vol 28 (1) ◽  
pp. 014201
Author(s):  
Tahereh G. Avval ◽  
Stanislav Průša ◽  
Sean C. Chapman ◽  
Matthew R. Linford ◽  
Tomáš Šikola ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Low Energy ◽  
Ion Scattering ◽  
Low Energy Ion Scattering

On low energy ion scattering spectroscopy and chlorine adsorption on silver

2000 ◽  
Vol 445 (1) ◽  
pp. L36-L40 ◽  
Author(s):  
M. Casagrande ◽  
S. Lacombe ◽  
L. Guillemot ◽  
V.A. Esaulov
Keyword(s):  
Low Energy ◽  
Ion Scattering ◽  
Low Energy Ion Scattering ◽  
Ion Scattering Spectroscopy ◽  
Chlorine Adsorption

Ag ADSORPTION ON THE W(100) PLANE

2003 ◽  
Vol 17 (29n30) ◽  
pp. 1527-1536
Author(s):  
D. S. CHOI ◽  
D. H. KIM ◽  
S. S. KIM
Keyword(s):  
Surface Structure ◽  
Adsorption Layer ◽  
Adsorption Site ◽  
Low Energy ◽  
Ion Scattering ◽  
Low Energy Ion Scattering ◽  
Ion Scattering Spectroscopy

The surface structure of Ag/W(100) has been studied using LEED and Low Energy Ion Scattering Spectroscopy (ISS). We find that Ag coverages are saturated at 0.5 ML after annealing at 800°C regardless of the initial coverages between 0.7~1.0 ML. We observe a c(2×2) image after annealing the Ag/W(100) sample at 800°C. Using the ISS technique the adsorption site of Ag on the c(2×2) surface is found to be the center of the nearest two atoms on the W(100) surface. The height of the Ag adsorption layer is 1.58 Å above the W(100) surface.

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