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Issue 4, 2020
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Structural changes in colloid solutions of nanodiamond

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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

15 Oct 2019
04 Jan 2020
First published
06 Jan 2020

New J. Chem., 2020,44, 1640-1647
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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, 44, 1640
DOI: 10.1039/C9NJ05191K

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