Synthesis, properties, and model of the formation of silica supramolecular structures

Abstract

Experimental data on the synthesis of X ray amorphous spherical silica particles and their pre cipitation with the formation of a supramolecular ordered structure are presented. The influence of vari ous conditions of synthesis (temperature, pH, relation between components) on the sizes and morphology of silica particles formed has been shown. The data on the influence of particle precipitation rate and pH on the structure of supramolecular matrices formed have been obtained. An analysis of experimental data has made it possible to propose a hierarchical model of the formation of X ray amorphous spherical silica particles.

Kinetic Features of Formation of Supramolecular Matrices on the Basis of Silica Monodisperse Spherical Particles

“…However at present the supramolecular silica particles are more often considered as promising objects for synthesis of new composition materials, photonic crystals and nanostructured materials based on them. The 3D ordered closest packing of monodisperse silica spheres is an ideal matrix for creating a wide class of new nanostructured materials, but it greatly increases requirements for the monodispersity of particles, their size and the defects of derived supramolecular structures (Kamashev 2012). With this aim and within the task to develop the basis of synthesis of supramolecularly ordered matrices we carried out experimental studies of the rate of precipitation of silica particles and formation of a supramolecular structure on their basis in various conditions (growth modes).…”