▎ 摘　　要

A new class of mesoporous silica/graphene nanocomposites (MSGs) with a compact sandwich structure is prepared by assembly of mesoporous silica within the interlayer space (galleries) of graphite oxide (GO) using intercalated surfactants as a template. This gallery-templated synthesis involves the use of intercalated ammonium cation surfactants and neutral amines as co-surfactants to direct the hydrolysis and condensation of inorganic precursors (tetraethoxysilane, TEOS) within the galleries of GO. The confinement effects endowed by the galleries of GO make the mesoporous silica framework compactly sandwiched between the adjacent graphene sheets, and a single line of aligned mesopores parallel to the galleries of GO is observed. Depending on the chain length of the intercalated surfactants, the pore sizes of MSGs vary from 1.2 to 2.1 nm. Our gallery templated method to synthesize graphene-based nano composites might lead to a broad range of porous graphene-based nanocomposites with unique morphologies and properties. (C) 2016 Elsevier Inc. All rights reserved.