Synthesis of mesoporous silica grafted with 3-glycidoxypropyltrimethoxy-silane

Hexagonal mesoporous silicas chemically modified with 3-glycidoxypropyltrimethoxy-si lane functional groups were synthesized through the post-synthesis of surfactant free mesoporous silica (OSU-6-W). The solid state Si-29 NMR, titration method and elemental analysis of the modified samples showed that the average number of pendant groups in these hybrids were around 2.17 and 3.49 group/nm(2), respectively. The surface area analysis showed that these materials have pore diameters of 40.7 and 33.2 angstrom and surface areas of 966 and 720 m(2)/g, respectively. Infrared spectroscopy, solid state NMR for C-13 and Si-29 nuclei and X-ray diffraction patterns are in agreement with the success of the proposed synthetic procedures, as confirmed for the formation of the mesoporous hybrids. They have shown good performance towards metal-ion adsorption. (C) 2009 Elsevier B.V. All rights reserved.