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Structural changes in colloid solutions of nanodiamond

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Abstract

Dielectric permittivity, conductivity, density, viscosity and heat capacity measurements of dilute (0.01–0.1%) aqueous colloids of nanodiamond indicate that DND particles substantially affect the properties of water at surprisingly long distances from their surfaces. Luminescent microscopy reveals a uniform lattice-like pattern of DND agglomerates, probably held together by electrostatic interactions mediated by rearranged water molecules, at distances of a few μm. Heating, slow evaporation or dilution of the colloids causes quasi-periodic fluctuations of their electrophysical properties: as the particles coagulate, larger aggregates precipitate in accordance with Stokes law, which reduces the average size of the remaining suspended particles and alters their quasi-lattice arrangements in low-ΔH phase transitions.

Graphical abstract: Structural changes in colloid solutions of nanodiamond

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Article information


Submitted
15 Oct 2019
Accepted
04 Jan 2020
First published
06 Jan 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Structural changes in colloid solutions of nanodiamond

S. S. Batsanov, D. A. Dan’kin, S. M. Gavrilkin, A. I. Druzhinina and A. S. Batsanov, New J. Chem., 2020, Advance Article , DOI: 10.1039/C9NJ05191K

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