Beyond the first hydration shell: dielectric study of LiCl aqueous solution

作者：Liu, Shuang; Jia, Guo-Zhu^*; Liu, Feng-Hai

来源：Physics and Chemistry of Liquids, 2016, 54(2): 155-164.

DOI：10.1080/00319104.2015.1074044

• Dielectric constant
• Cole-Cole and two Debye-type
• hydration shell

The dielectric constant for lithium chloride (LiCl) in aqueous solution with the entire concentration has been determined in the frequency range 0.5 GHz-50GHz at 298K by dielectric relaxation spectroscopy (DRS). The system behaviour is described according to the Cole-Cole and two Debye-type relaxation functions whose evolution with composition is analysed. Combining the Cole-Cole and two Debye-type relaxation functions, the results of the dielectric properties of aqueous LiCl solution are presented and discussed. The maximum number of water molecules perturbed by ions in the hydration shell decays with its concentration. Using the extended Froehlich theory, it is concluded that the water structure is perturbed by ions beyond the first hydration shell in LiCl aqueous solution system.

• 出版日期2016-3-3
• 单位四川师范大学