Synthesis of High ordered Nanoporous Silica in Very Low Surfactant Concentration

After the discovery of M41S family of mesoporous compounds, by using lyotropic liquid phase as supramolecular templated for polymerization of inorganic species, a new pathway in nanotechnology was bloomed. These materials could be potentially used for embedding of metal complexes and metallic nanoparticle encapsulation, selective adsorption, catalysis and as functional materials. In M41S type materials, cationic surfactant molecules and surface silanolate, Si-O-, are implicated the so-called {S+, I-} pathway. It was reported that any anions present in the synthesis are not innocent spectators and they affect the silanolate concentration as well as the long range order in high ordered nanoporous silica.

کلیدواژه ها:

Mesoporous materials ، Nanoporous silica ، Lyotropic ، Liquid phase ، Hydrothermal stability