日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

This paper describes synthesis of mesoporous silica inside columnar alumina pores. A porous anodic alumina membrane has a packed array of columnar alumina pores with tens to hundreds nm in diameter. When a precursor solution containing silica source and surfactants is introduced inside the alumina pores, columnar mesoporous silica composed of one-dimensional silica-nanochannels can be formed. In addition to the one-dimensional silica-nanochannels, mesoporous silica with other unique mesostructures can be formed. Thus, synthesis of mesoporous silica inside the alumina pore has a potential use to control pore structure of mesoporous silica. A hybrid mesoporous membrane, which is composed of an alumina membrane with mesoporous silica inside alumina pores, allows the use of mesoporous silica as nanofluidic systems toward various chemical systems.