Formation, Morphology, and Size Parameters of Nanopowders Based on Mg3Si2O5(OH)4–Ni3Si2O5(OH)4 Nanoscrolls

— We have studied the effect of the composition of starting Mg 1 – х Ni х (OH) 2 nanoplates on the formation of (Mg 1 – х Ni х ) 3 Si 2 O 5 (OH) 4 nanoscrolls under hydrothermal conditions and determined the structure, morphology, size parameters, and specific surface area of the synthesized nanopowders based on (Mg 1 – х Ni х ) 3 Si 2 O 5 (OH) 4 hydrosilicates with the chrysotile structure. The thermodynamically driven dehydration of the starting (Mg 1 – х Ni х )(OH) 2 hydroxide with х ≳ 0.4 during hydrothermal treatment of a mixture of magnesium nickel hydroxide nanoplates and silica gel (SiO 2 ∙ n H 2 O) particles dispersed in an aqueous sodium hydroxide solution has been shown to play a key role in determining the formation and structural characteristics of (Mg 1 – х Ni х ) 3 Si 2 O 5 (OH) 4 nanopowders with tubular structure.