Synthesis of Hollow Silica Nanoparticle Aggregates from Asymmetric Methyltrimethoxysilane Using a Modified SBA-15 Method.

This work presents the synthesis and characterization of hollow silica particles that were fabricated with the asymmetric methyltrimethoxysilane (MTMS) as the only silica precursor, by using a modified SBA-15 synthesis method, for the first time. The MTMS concentration was varied in the range from 0.300 to 0.

Influence of Shell Thickness on the Colloidal Stability of Magnetic Core-Shell Particle Suspensions.

We present a Discrete Element study of the behavior of magnetic core-shell particles in which the properties of the core and the shell are explicitly defined. Particle cores were considered to be made of pure iron and thus possessed ferromagnetic properties, while particle shells were considered to be made of silica. Core sizes ranged between 0.

Surface charge control through the reversible adsorption of a biomimetic polymer on silica particles.

The control of the physicochemical properties of silica particles is of paramount importance to achieve full functionality in specific applications. A novel facile method of silica particle synthesis, requiring only two reactants, was developed. Control of the surface charge of these newly synthesized silica particles was achieved via the rapid electrostatic adsorption and acidic desorption of the branched, biomimetic polymer, polyethylenimine (PEI).