V. T. Lebedev, Yu. V. Kulvelis, M. K. Rabchinskii, A. T. Dideikin, A. V. Shvidchenko, B. B. Tudupova, V. I. Kuular, N. P. Yevlampieva, A. I. Kuklin
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Structuring of Graphene Oxide Interacting with Nanodiamonds in Aqueous Dispersions
Small-angle neutron scattering has been used to study the mechanisms of graphene oxide self-organization in aqueous dispersions during its interaction with detonation nanodiamonds having different surface potential signs. Being mixed with a hydrosol of positively charged diamonds, negatively charged graphene oxide yields a stable colloid due to the formation of planar heterostructures in the form of paired sheets tightly connected through diamonds (25 wt %) when the sheets are joined. Under similar conditions, diamonds with a negative potential are localized between graphene sheets to form, at an increased fraction (44 wt %), less dense assemblies with a gap between the sheets on the order of the diamond particle radius. The binding of graphene oxide to diamonds has been confirmed by transmission electron microscopy data.
期刊介绍：
Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.
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