Computing and Library Services - delivering an inspiring information environment

Molecular dynamics simulations of the interaction between the surfaces of polar solids and aqueous solutions

Spagnoli, Dino and Cooke, David J. (2006) Molecular dynamics simulations of the interaction between the surfaces of polar solids and aqueous solutions. Journal of Materials Chemistry, 16 (20). pp. 1997-2002. ISSN 09599428

Metadata only available from this repository.


Molecular dynamics (MD) simulations were performed on the interaction of two solid surfaces, namely the (00.1) hematite and (10.4) calcite surfaces, in contact with aqueous electrolyte solutions containing different concentrations of dissolved NaCl. The structure and a number of properties of the interface were investigated. The size and amount of statistics needed for convergence of these calculations required the use of high performance computers. The two surfaces show different bonding mechanisms with the water, but both result in a distinctive layering of the water, which in turn modifies a range of surface behaviour including diffusivity and charge distribution. We find that the resulting charge distribution from the solvent has a greater control of the disposition of dissolved ions than either surface charge or ionic strength, within reasonable limits. Thus we see a characteristic double layer at neutral surfaces and the charge distribution oscillates into the bulk. Finally, preliminary work on calculating the free energy of dissolution of ions from the surface to the aqueous solution suggests that the presence of dissolved ions makes a small but significant reduction to the dissolution free energies

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
Related URLs:
Depositing User: Sara Taylor
Date Deposited: 26 Jun 2008 14:52
Last Modified: 28 Aug 2021 10:39


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©