From Stable Aqueous Dispersion of Carbon Nanoparticles
to the Clusters of Metastable Shungite Carbon¹

N. N. Rozhkova^a, G. I. Yemel’yanova^b, L. E. Gorlenko^b, A. V. Gribanov^c,†, and V. V. Lunin^b

^aInstitute of Geology, Karelian Research Centre, RAS, Pushkinskaya str.11, Petrozavodsk 185910 Russia

^bDepartment of Chemistry, Moscow State University, Lenisnskie Gory 1/3, Moscow 119991 Russia

^cInstitute o f Macromolecular Compounds RAS, V. O. Bol’shoi av. 31, St. Petersburg 199004 Russia

e-mail: rozhkova@krc.karelia.ru

Received October 28, 2010

Abstract—Aqueous dispersion of Shungite carbon (ShC) condensation is followed by aggregation of carbon
nanoparticles and further net formation. Data obtained by adsorption methods that characterized changes in
porosity of natural shungites when transformed into aqueous dispersion and precipitated, were investigated.
Pore size distribution determined for natural shungites is characterized by micro- and submesopores of <0.7–
5.0 nm in size predominantly. It correlates with values of basic structural elements (0.4–0.7 nm) releasing into
aqueous dispersion and with the primary ShC globular aggregates less than 6.0 nm in size. Decreasing of spe-
cific surface and total pore volume while the mean pore radii remains constant, were observed when oxidizing
(ozonating) and heating of carbonaceous net. Different stages of ShC nanoparticles aggregation in nature were
modeled in laboratory under concentration of stable aqueous dispersion.

Keywords: shungite, carbon nanoparticles, aqueous dispersions, adsorption

DOI: 10.1134/S1087659611060174

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