Romá F, Ramirez-Pastor AJ. Statistical thermodynamics of adsorbates with nonsymmetrical lateral interactions.
PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004;
69:036124. [PMID:
15089378 DOI:
10.1103/physreve.69.036124]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2002] [Revised: 01/12/2004] [Indexed: 05/24/2023]
Abstract
The exact adsorption thermodynamics of particles with nonsymmetrical ad-ad interactions on a one-dimensional space is presented. The asymmetry is introduced by considering the lateral interactions depending on the orientation of the adsorbed molecules. The adsorption process is monitored by following the adsorption isotherm, the thermodynamic factor, the differential heat of adsorption, and the configurational entropy of the adlayer. A rich variety of different behaviors is found with respect to the standard lattice gas of interacting monomers. The resulting thermodynamic description may also be applicable to adsorption and transport of nonspherical molecules in low-dimensional systems such as carbon nanotubes.
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