Work function studies of rare-gas/noble metal adsorption systems using a Kelvin probe

2006 ◽  
Vol 73 (7) ◽  
Author(s):  
C. Hückstädt ◽  
S. Schmidt ◽  
S. Hüfner ◽  
F. Forster ◽  
F. Reinert ◽  
...  
Keyword(s):  
Work Function ◽  
Noble Metal ◽  
Metal Adsorption ◽  
Rare Gas ◽  
Kelvin Probe ◽  
Adsorption Systems

EFFECT OF GRAIN SIZE ON THE ELECTRON WORK FUNCTION OF Cu AND Al

2004 ◽  
Vol 11 (02) ◽  
pp. 173-178 ◽  
Author(s):  
WEN LI ◽  
D. Y. LI
Keyword(s):  
Grain Size ◽  
Phase Transformation ◽  
Grain Boundary ◽  
Work Function ◽  
Electron Work Function ◽  
Deformation Texture ◽  
Kelvin Probe ◽  
Surface Conditions ◽  
The Mean ◽  
Sophisticated Instrument

The Kelvin probe is a sophisticated instrument which is very sensitive to changes in surface conditions, such as deformation, texture, phase transformation and contamination. Efforts have been made to use this technique to diagnose wear. In this study, the effect of the grain boundary (GB) on the electron work function (EWF) was examined with the aim of investigating the contribution of changes in grain size to total changes in the EWF during wear. Copper and aluminum were studied as examples. It was demonstrated that the EWF dropped in the vicinity of GB's and the mean EWF decreased as the grain size decreased. The mechanism responsible for the changes in the EWF with respect to the GB is discussed.

scholarly journals Work function difference of naphthyl end-capped oligothiophene in different crystal alignments studied by Kelvin probe force microscopy

2020 ◽  
pp. 106060
Author(s):  
Mads Nibe Larsen ◽  
Mads Svanborg Peters ◽  
Rodrigo Lemos-Silva ◽  
Demetrio A. Da Silva Filho ◽  
Bjarke Jørgensen ◽  
...  
Keyword(s):  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Work Function Difference ◽  
Function Difference

Work Function on Dye-Adsorbed TiO2Surfaces Measured by Using a Kelvin Probe Force Microscope

2008 ◽  
Vol 112 (17) ◽  
pp. 6961-6967 ◽  
Author(s):  
Masatoshi Ikeda ◽  
Naoki Koide ◽  
Liyuan Han ◽  
Akira Sasahara ◽  
Hiroshi Onishi
Keyword(s):  
Work Function ◽  
Kelvin Probe

FORMATION OF SURFACE DIPOLES FOR SMALL PALLADIUM CLUSTERS DEPOSITED ON α-(0001)Al2O3

1996 ◽  
Vol 03 (01) ◽  
pp. 973-977 ◽  
Author(s):  
S. OGAWA ◽  
S. ICHIKAWA
Keyword(s):  
Charge Transfer ◽  
Single Crystal ◽  
Work Function ◽  
Probe Method ◽  
Kelvin Probe ◽  
Electronic Interactions ◽  
Palladium Clusters ◽  
Metal Support ◽  
Pd Clusters ◽  
Kelvin Probe Method

The Kelvin-probe method is utilized to measure the work function of a single-crystal aluminum covered with palladium clusters. It is found that formation of interface dipoles occurs by charge transfer from Al 2 O 3 to Pd clusters, particularly for those less than 2 nm in diameter. These results provide valuable clue to the understanding of metal-support electronic interactions, which is important in catalysis.

Molecular Characterization of Noble Metal Adsorption at the Water-Aluminum Oxide Interface

2011 ◽  
Vol 396-398 ◽  
pp. 745-750
Author(s):  
Jian Ming Liu ◽  
J. R. Regalbuto
Keyword(s):  
Noble Metal ◽  
Pollution Abatement ◽  
Coordination Complexes ◽  
Metal Adsorption ◽  
Oxide Interface ◽  
X Ray ◽  
Catalysts Preparation ◽  
X Ray Absorption ◽  
Effect Of Surface

We have obtained relatively unambiguous evidence that validates a simple, predictive model describing the uptake of noble metal coordination complexes from aqueous solutions onto oxide surfaces. The results confirm that the metal-oxide interaction is essentially electrostatic in nature. The evidence has been obtained by applying extended x-ray absorption fine structure (EXAFS) analysis to noble metal adsorption systems in which the effect of surface-localized pH has been isolated and quantified. The model has applications ranging from catalysts preparation to heavy metal pollution abatement and precious metal recovery.

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