Influence of the sign of the zeta potential of nanodiamond particles on the morphology of graphene-detonation nanodiamond composites in the form of suspensions and aerogels
Rabchinskii M. K.1, Trofimuk A. D.1, Shvidchenko A. V.1, Baidakova M. V.1, Pavlov S. I.1, Kirilenko D. A.1, Kulvelis Yu. V. 2, Gudkov M. V.3, Shiyanova K. A.3, Koval V. S.4, Peters G. S.5, Lebedev V. T.2, Melnikov V. P.3, Dideikin A. T.1, Brunkov P. N.1
1Ioffe Institute, St. Petersburg, Russia
2Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
3N.N. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
4Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
5National Research Center “Kurchatov Institute”, Moscow, Russia
Email: trofimuk.ad@mail.ioffe.ru

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A new method of using the detonation nanodiamond with positive and negative zeta potential as a spacer for aerogels based on graphene oxide is presented. It is shown that the dosed addition of detonation nanodiamonds' particles to the suspension of graphene oxide hydrosol made it possible to triple the specific surface area of the resulting aerogel compared to graphene oxide aerogel, and this effect is more significant when nanodiamonds with a positive zeta potential are used. It was also shown that aerogels derived from graphene oxide and detonation nanodiamond with a positive zeta potential have a specific morphology with graphene oxide platelets being twisted. This effect is discussed in terms of the change in the average zeta potential of the initial mixtures. Keywords: two-component systems, carbon materials, colloid chemistry.
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