Budded, Mesoporous Silica Hollow Spheres: Hierarchical Structure Controlled by Kinetic Self-Assembly

摘要

Recently, mesoporous materials with hierarchical structures and well-defined morphologies have attracted much attention.[1] Besides possible practical applications, studies of mesoporous materials may also shed light on fundamental mechanisms of biomineralization.[2] Among the many types ofmesoporous materials, hollow spheres are of significance because of their potential uses in encapsulation, drug-delivery, and controlled-release applications. Although many articles have been published describing the interior templating of mesoporous hollow particles using hard templates,[3] vesicles,[4] or emulsions,[5] the fabrication of hierarchical structures on the shell has rarely been reported.