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Updated: Jul 15, 2026
09:43
Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
Published on: April 11, 2020
Memory effect in the adsorption phenomena of neutral particles
R S Zola1, E K Lenzi, L R Evangelista
1Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020-900 Maringá, Paraná, Brazil.
Summary
This study explores particle adsorption and desorption using kinetic equations with memory effects. The findings provide analytical solutions for particle density evolution, enhancing understanding of adsorption processes.
Area of Science:
- Physical Chemistry
- Chemical Kinetics
- Fluid Dynamics
Background:
- Adsorption-desorption is crucial in various physical and chemical processes.
- Understanding memory effects in kinetic equations is key to modeling complex relaxation phenomena.
- Previous studies utilized similar kernels for dielectric relaxation and polymer dynamics.
Purpose of the Study:
- To investigate the adsorption-desorption of neutral particles in fluids using kinetic equations.
- To incorporate memory effects into the kinetic model via nonsingular kernels.
- To derive analytical solutions for particle density evolution.
Main Methods:
- Utilized a kinetic equation with a nonsingular kernel at limiting surfaces.
- Considered three types of temporal kernels to represent memory effects.
- Employed a general procedure to determine the time evolution of particle density.
Main Results:
- Derived a closed analytical form for the time evolution of particle density.
- Demonstrated how different temporal kernels influence adsorption-desorption dynamics.
- Showcased the relevance of kernel choice in distinguishing physisorption and chemisorption.
Conclusions:
- The study provides a general analytical framework for adsorption-desorption phenomena.
- The choice of temporal kernel is critical for understanding the interplay of physisorption and chemisorption.
- The findings are applicable to a broad range of adsorption processes in fluid systems.
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