Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Adsorption behavior of repulsive molecules.

G L Aranovich1, T E Wetzel, M D Donohue

  • 1Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.

The Journal of Physical Chemistry. B
|July 21, 2006
PubMed
Summary

Repulsive forces between adsorbate molecules create unique steps in adsorption isotherms on one-dimensional lattices. Finite lattice size and molecule repulsion significantly alter adsorption behavior, especially for even versus odd lattice lengths.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Modification of classical approximations for diffusion in fluids with density gradients.

Physical chemistry chemical physics : PCCP·2010
Same author

Resolving the inconsistency between classical diffusion and adsorption.

Langmuir : the ACS journal of surfaces and colloids·2009
Same author

Thermodynamics of systems with different geometric constraints and intermolecular correlations.

The journal of physical chemistry. B·2009
Same author

Configurational probabilities for monomers, dimers and trimers in fluids.

Physical chemistry chemical physics : PCCP·2008
Same author

Monte Carlo simulations of phase transitions and adsorption isotherm discontinuities on surface compression.

Journal of colloid and interface science·2008
Same author

Configurational probabilities for symmetric dimers on a lattice: an analytical approximation with exact limits at low and high densities.

The Journal of chemical physics·2007

Area of Science:

  • Physical Chemistry
  • Surface Science
  • Statistical Mechanics

Background:

  • Adsorption processes are crucial in various scientific fields.
  • Intermolecular forces, particularly repulsion, influence adsorbate behavior.
  • Previous studies on one-dimensional lattices primarily focused on attractive forces.

Purpose of the Study:

  • To investigate the impact of repulsive interactions on adsorption isotherms in a one-dimensional lattice model.
  • To analyze the effects of finite lattice size on adsorption behavior with repulsive forces.
  • To explore the unique phenomena arising from adsorbate repulsion in confined systems.

Main Methods:

  • Exact calculation of adsorption isotherms for one-dimensional lattices.
  • Analysis of finite and infinite chains of active sites.

Related Experiment Videos

  • Mathematical modeling of adsorbate-adsorbate repulsive interactions.

    • Main Results:

    • Repulsive interactions between adsorbate molecules lead to distinct steps in adsorption isotherms.
    • Spatial confinement and strong site attraction can cause compression of the adsorbed phase.
    • Adsorption behavior differs significantly for even and odd lattice lengths, with even lattices showing up to two steps and odd lattices showing one step.

    Conclusions:

    • Repulsive adsorbate interactions introduce novel features, like stepped isotherms, not observed in previous lattice models.
    • Finite size effects are critical for understanding adsorption on one-dimensional systems with repulsion.
    • The parity of lattice sites (even or odd) fundamentally dictates the number and position of steps in the adsorption isotherm.