Influence of the Compressibility of Adsorbed Layers on the Surface Dilational Elasticity

Langmuir ◽  
2002 ◽  
Vol 18 (20) ◽  
pp. 7748-7752 ◽  
Author(s):  
V. B. Fainerman ◽  
R. Miller ◽  
V. I. Kovalchuk
Keyword(s):  
Adsorbed Layers ◽  
Dilational Elasticity

Acetylene chemisorption at palladium: Effect of temperature and structure of the surface

1984 ◽  
Vol 49 (6) ◽  
pp. 1448-1458
Author(s):  
Josef Kopešťanský
Keyword(s):  
Work Function ◽  
Atomic Hydrogen ◽  
Effect Of Temperature ◽  
Thermally Stable ◽  
Template Effect ◽  
Temperature Range ◽  
Adsorbed Layers ◽  
Different Types ◽  
Adsorption Complexes ◽  
Low Coverage

The effect of temperature and structure of the palladium surfaces on acetylene chemisorption was studied along with the interaction of the adsorbed layers with molecular and atomic hydrogen. The work function changes were measured and combined with the volumetric measurements and analysis of the products. At temperature below 100 °C, acetylene is adsorbed almost without dissociation and forms at least two different types of thermally stable adsorption complexes. Acetylene adsorbed at 200 °C is partly decomposed, especially in the low coverage region. Besides the above mentioned effects, the template effect of adsorbed acetylene was studied in the temperature range from -80° to 25 °C. It has been shown that this effect is a typical phenomenon of the palladium-acetylene system which is not due to surface impurities.

scholarly journals Adsorption in Mixtures with Competing Interactions

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4532
Author(s):  
Marek Litniewski ◽  
Alina Ciach
Keyword(s):  
Short Range ◽  
Selective Adsorption ◽  
Similar Amount ◽  
Particle Interactions ◽  
Near Surface ◽  
Gas Density ◽  
Short Range Repulsion ◽  
Adsorbed Layers ◽  
Dynamics Simulations ◽  
Oppositely Charged

A binary mixture of oppositely charged particles with additional short-range attraction between like particles and short-range repulsion between different ones in the neighborhood of a substrate preferentially adsorbing the first component is studied by molecular dynamics simulations. The studied thermodynamic states correspond to an approach to the gas–crystal coexistence. Dependence of the near-surface structure, adsorption and selective adsorption on the strength of the wall–particle interactions and the gas density is determined. We find that alternating layers or bilayers of particles of the two components are formed, but the number of the adsorbed layers, their orientation and the ordered patterns formed inside these layers could be quite different for different substrates and gas density. Different structures are associated with different numbers of adsorbed layers, and for strong attraction the thickness of the adsorbed film can be as large as seven particle diameters. In all cases, similar amount of particles of the two components is adsorbed, because of the long-range attraction between different particles.

Increased transmission of a thin gold film by adsorbed layers of dye molecules

2002 ◽  
Vol 80 (20) ◽  
pp. 3715-3717 ◽  
Author(s):  
Ulrich C. Fischer ◽  
Eugene Bortchagovsky ◽  
Jörg Heimel ◽  
René T. Hanke
Keyword(s):  
Gold Film ◽  
Dye Molecules ◽  
Thin Gold Film ◽  
Adsorbed Layers

Thickness of Adsorbed Layers of High Molecular Weight Polyelectrolytes Studied by Ellipsometry

Langmuir ◽  
1995 ◽  
Vol 11 (7) ◽  
pp. 2621-2625 ◽  
Author(s):  
Lars Oedberg ◽  
Sussan Sandberg ◽  
Stefan Welin-Klintstroem ◽  
Hans Arwin
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Adsorbed Layers

Competing polymer–substrate interactions mitigate random copolymer adsorption

Soft Matter ◽  
2018 ◽  
Vol 14 (35) ◽  
pp. 7204-7213 ◽  
Author(s):  
Mary J. B. Davis ◽  
Biao Zuo ◽  
Rodney D. Priestley
Keyword(s):  
Random Copolymer ◽  
Polymer Substrate ◽  
Compositional Heterogeneity ◽  
Substrate Interactions ◽  
Adsorbed Layers ◽  
Individual Polymer

Compositional heterogeneity introduces a competition between individual polymer–substrate interactions that limits the growth of irreversibly adsorbed layers.

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