Hydrothermal synthesis of nanotubular Co-Mg hydrosilicates with the chrysotile structure

Nanotubes of the chrysotile structure were obtained under hydrothermal conditions in the series of hydrosilicates of the Mg 3 Si 2 O 5 (OH) 4 -Co 3 Si 2 O 5 (OH) 4 system. Substitution of cobalt ions for magnesium ions affects the conditions of formation, morphology, and size of the nanotubes. The formation of nanotubes on hydrothermal treatment of the starting mixtures of cobalt metasilicate and magnesium, cobalt, and, silicon oxides and hydroxides occurs in stages, and the stage of nanotube formation is always preceded by the formation of a lammellar structure.