Molecular Dynamics Applications in Clay Mineral Systems

Molecular dynamics simulations have become indispensable for unravelling the behaviour of clay minerals at the atomic scale. By modelling individual atoms or coarse‐grained units over time, these methods capture dynamic processes such as interlayer swelling, ion exchange, water transport, adsorption of organic molecules and mechanical deformation. Classical approaches rely on parametrised force fields to describe interatomic potentials, enabling nanosecond‐scale studies of basal‐spacing variations, swelling pressures and elastic moduli. Coarse‐grained schemes extend temporal and spatial reach to examine polymer–clay nanocomposite assembly and tactoid self‐organisation. Ab initio molecular dynamics further resolves reactive processes at edges and defects by coupling quantum‐mechanical accuracy with finite‐temperature simulations, revealing protonation, dissociation and hydrogen‐bond networks in confined water. Together, these techniques illuminate the mechanisms by which adsorbed water layers, exchangeable cations and surface charges govern clay rheology, sorption capacity for contaminants or carbon dioxide, and the emergence of macroscopic properties in gels and nanocomposites. Application domains span geotechnical engineering, environmental remediation, energy storage and materials science, highlighting the global significance of predictive molecular modelling for design and optimisation of clay‐based technologies.

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Molecular Dynamics Applications in Clay Mineral Systems publication trend

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Technical terms

Force field: A set of mathematical expressions and parameters describing interatomic interactions in classical simulations.

Basal spacing: The distance between adjacent clay layers, influenced by hydration and ion coordination.

Coarse‐graining: A modelling approach that groups atoms into larger pseudo‐particles to extend simulation length and size scales.

Ab initio molecular dynamics: Simulation method coupling quantum mechanics with atomic motion to capture electronic and reactive processes.

Inner‐sphere adsorption: Direct binding of an ion to surface atoms, often involving partial or complete dehydration.

References

1. Molecular modeling of clay minerals: A thirty-year journey and future perspectives. Coordination Chemistry Reviews (2025).
2. Chemically Specific Multiscale Modeling of Clay–Polymer Nanocomposites Reveals Intercalation Dynamics, Tactoid Self‐Assembly and Emergent Materials Properties. Advanced Materials (2014).
3. Effect of layer charge on the crystalline swelling of Na+, K+ and Ca2+ montmorillonites: DFT and molecular dynamics studies. Clay Minerals (2016).
4. Ab initio molecular dynamics study of the interlayer and micropore structure of aqueous montmorillonite clays. Geochimica et Cosmochimica Acta (2015).