Unravelling the anomalous dielectric permittivity of nanoconfined electrolyte solutions
نویسندگان
چکیده
منابع مشابه
Unravelling the anomalous dielectric permittivity of nanoconfined electrolyte solutions.
The dielectric properties of sodium chloride solutions confined in a hydrophilic nanocavity were investigated by means of molecular dynamics simulations. Unlike what is observed in the bulk phase, three dielectric regimes were evidenced, namely an anomalous increase in the dielectric permittivity at low concentrations (with respect to confined pure water), a dielectric plateau at intermediate c...
متن کاملPermittivity and Dielectric Relaxations in Liquid-Ammonia Solutions
Dielectric constant and loss in liquid-ammonia solutions of alkali halides have been measured in the frequency range 0.7 — 70 GHz. At least one relaxation process exists in this frequency range in addition to the relaxation of the solvent molecules. The additional relaxation is ascribed to the orientational polarisation of ion pairs. The concentration of the ion pairs, calculated with a special...
متن کاملDielectric relaxation of electrolyte solutions using terahertz transmission spectroscopy
We use terahertz ~THz! transmission spectroscopy to obtain the frequency dependent complex dielectric constants of water, methanol, and propylene carbonate, and solutions of lithium salts in these solvents. The behavior of the pure solvents is modeled with either two ~water! or three ~methanol and propylene carbonate! Debye relaxations. We discuss the effects of ionic solvation on the relaxatio...
متن کاملAn Evaluation of Four Electrolyte Models for the Prediction of Thermodynamic Properties of Aqueous Electrolyte Solutions
In this work, the performance of four electrolyte models for prediction the osmotic and activity coefficients of different aqueous salt solutions at 298 K, atmospheric pressure and in a wide range of concentrations are evaluated. In two of these models, (electrolyte Non-Random Two-Liquid e-NRTL and Mean Spherical Approximation-Non-Random Two-Liquid MSA-NRTL), association between ions of opposit...
متن کاملAnomalous ground state of the electrons in nanoconfined water.
Water confined on the scale of 20 Å, is known to have different transport and thermodynamic properties from that of bulk water, and the proton momentum distribution has recently been shown to have qualitatively different properties from that exhibited in bulk water. The electronic ground state of nanoconfined water must be responsible for these anomalies but has so far not been investigated. We...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nanoscale
سال: 2015
ISSN: 2040-3364,2040-3372
DOI: 10.1039/c5nr00508f