M. Wahab, Il Kim, C. Ha
Oct 1, 2004
Citations
3
Influential Citations
79
Citations
Quality indicators
Journal
Journal of Solid State Chemistry
Abstract
Amine-functionalized, organic/inorganic hybrid mesostructured organosilica (BAFMO) materials have been synthesized and characterized from two bridged silsesquioxane precursors, 1,2-bis(triethoxysilyl)ethane (BTESE) and bis[(3-trimethoxysilyl)propyl]amine (BTMSPA). Mole ratios of BTESE ranged from 0.05, 0.10, 0.125, to 0.175. The syntheticpathway involves employing cetyltrimethylammonium bromide as a template under basic conditions at room temperature. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies revealed that the resultant BAFMO materials possess mesocopically ordered, hexagonal symmetries and well-defined morphologies. However, the order was decreased as the amount of BTMSPA increased, in terms of the d100 spacings and the unit cell parameters on XRD as well as the TEM images. N2 gas sorption experiments showed a gradual decrease in both the surface area, from 1075 to 688 m 2 /g, and the pore volume, from 2.08 to 0.55 cm 3 /g, on increasing the amount of BTMSPA. The organic functionalization was successfully determined by Fourier-transform infrared and 13 C CP MAS