Method for determining bond energy in nanostructured water
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MRS Advances © 2020 Materials Research Society DOI: 10.1557/adv.2020.91
Method for determining bond energy in nanostructured water Vladimir Petrovich, Svetlana Volchek, Valentina Yakovtseva, Vitaly Bondarenko, Sergey Redko Belarusian State University of Informatics and Radioelectronics, 6 P. Brovki str., Minsk, Belarus
ABSTRACT
Using water as an example, it is shown that monitoring the change in the loss tangent is a high sensitive method that allows determining the activation energy of relaxation processes in nanostructured water with high accuracy. The use of sensors, the electrodes of which are not in direct contact with the liquid under study is shown to be reasonable. The conditions for obtaining reliable information on the properties of water and its solutions are also justified, namely: measurements should be carried out using pulse methods for several seconds, and then measurements should be stopped to avoid contamination of the solutions studied by electrolysis products. The method of monitoring the magnitude of the loss tangent at fixed frequencies allows the acidity of solutions (pH value) to be controlled at the same time without using specialized instruments for acidity studying.
INTRODUCTION: Water is one of the most important liquids used in modern micro and nanoelectronics technology. Authors [1, 2] have shown that both the electrophysical and physico-biological properties of the resulting aqueous solutions vary significantly depending on the initial water structuring, that is, the water interparticle bond energy. This paper discusses one possible method for monitoring the properties of water. Today, there are the following basic ideas about the structure of water as a partially selforganizing system with a dipole as an elementary structural element: (1) in addition to neutral dipole water molecules, water also contains the OH - and H+ ions that are products of the water dissociation; (2) water contains water molecules that are linearly associated with hydrogen bonds, and the closed (by the ring principle) structural organization of water is not excluded at that; (3) according to [3, 4], water forms three-dimensional nanoclusters. Each nanocluster can contain from 100 to 500, and even up to 910 water molecules. The nanocluster size is estimated to be equal to units of nanometers. The basis for the cluster construction is a tetragonal cell, at the vertices of which water 369
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molecules linked by the hydrogen bonds are located. However, the question still remains to be clarified: which part of the total number of water molecules is included in these nanoclusters, and which part remains “free” in the form of Н 2О dipoles. Note that even in pure water, OH- anions and H+ cations are formed as a result of the dissociation process. The hydration of these ions (i.e. an attachment o
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