Monodisperse spherical silica particles with controlled-varied diameter of micro- and mesopores

A method of fast (1 hour) synthesis of monodisperse spherical silica particles with pore sizes of diameters 0.8 and 2.3–4.5 nm has been developed based on the realization of an aggregate model of particle formation. Cethyl trimethyl ammonium bromide, decyl trimethyl ammonium bromide, and 1,3,5-trimeth-ylbenzene and rhodamine 6G were chosen as the pore-forming agents. The morphological and adsorptive-structural properties of the synthesized materials were studied. The mean-square deviations were no more than 15% for micro- and mesopore diameters, and 10% for the particle diameters. The pore volume and the specific surface of the particles were 0.5–0.8 cm3/g and 600–1100 m2/g.