Functionalization of mesoporous Si-MCM-41 by grafting with trimethylcholosilane

Abstract

954The production of functionalized mesoporous silicas has attracted great attention in the last years. In particular, the uses of organosilanes, as modification agents, has been largely studied due mainly to the increasing requirements deriving from the area of polymer nanocomposites, treatments of heavy metal contaminants, heterogeneous catalysis and also in components of active corrosion protection coatings. In this study, organosilane-modified mesoporous were prepared and investigated by various physico-chemical techniques, including X-ray powder diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), 13C CP/MAS NMR and Thermalgravimetry (TGA). The organically modified mesoporous derived from the reaction of mesoporous Si-MCM-41 with trimethylchlorosilane have been considered. The results indicated that the surface modification did not modify the original structure of Si-MCM-41 but altered their original hydrophilic nature to hydrophobic. Herein, we demonstrate the possibility of modify and functionalize surface of MCM-41, enabling applications in many fields as nanocomposites, drug releasing agents and components of active coatings.