Smart Control of Monodisperse Stöber Silica Particles: Effect of Reactant Addition Rate on Growth Process

摘要: Control over the synthesis of monodisperse silica particles up to mesoscopic scale is generally made difficult due intrinsic limitation submicrometric dimensions and secondary nucleation in seeded experiments. To investigate this issue overcome these difficulties, we have implemented single step processing by quantifying effects progressive addition a diluted tetraethyl orthosilicate solution ethanol on size monodispersity particles. Contrary grown polymerization, with 2 μm were synthesized. Moreover, exhibit final diameter (df), which varies V-1/3 more than orders magnitude rate (V). On basis kinetic study presence showing that particle growth limited diffusion monomer species, developed diffusion-limited model theoretically explain observed df(V) behavior quantitatively retrieve measured amp...