Binary cationic-anionic surfactant templated synthesis of organic functionalized porous silica nanomaterials

Abstract

In this study, vinyl-functionalized porous silica (V-P-SiO2) and ureido-functionalized porous silica (UD-P-SiO2) have been synthesized separately by using hexadecyl trimethyl ammonium bromide (CTAB) and sodium dodecyl sulfonate (SDS) as mixed templates. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectrum (FTIR) and N2 adsorption–desorption measurement. The results showed that UD-P-SiO2 with a diversity of morphologies were obtained by judiciously chosen mole ratio of SDS to CTAB (R = nSDS:nCTAB). On the contrast, the mole ratio of surfactants had less effect on the morphologies of V-P-SiO2 until the mole ratio of SDS to CTAB was reached 1.6, however, FTIR proved that it had effect on the vinyl groups in the V-P-SiO2 network framework.