Bridged amine-functionalized mesoporous organosilica materials from 1,2-bis(triethoxysilyl)ethane and bis[(3-trimethoxysilyl)propyl]amine

Mohammad A Wahab; I Kim; C S Ha

doi:10.1016/j.jssc.2004.05.062

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Bridged amine-functionalized mesoporous organosilica materials from 1,2-bis(triethoxysilyl)ethane and bis[(3-trimethoxysilyl)propyl]amine

Journal article

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Bridged amine-functionalized mesoporous organosilica materials from 1,2-bis(triethoxysilyl)ethane and bis[(3-trimethoxysilyl)propyl]amine

Mohammad A Wahab, I Kim and C S Ha

Journal of Solid State Chemistry, Vol.177(10), pp.3439-3447

2004

DOI: https://doi.org/10.1016/j.jssc.2004.05.062

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Abstract

mesoporous organosilicas

Bis(3-trimethoxysilyl)propylamine

nitrogen isotherms

hybrid mesoporous materials

transmission electron microscope (TEM)

XPS

NMR

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 synthetic pathway 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. N 2 gas sorption experiments showed a gradual decrease in both the surface area, from 1075 to 688m2/g, and the pore volume, from 2.08 to 0.55cm3/g, on increasing the amount of BTMSPA. The organic functionalization was successfully determined by Fourier-transform infrared and 13C CP MAS NMR spectroscopy. X-ray photoelectron spectroscopy and elemental analysis results also confirmed the presence of Si-C bond as well as amine functionalities in the solvent-extracted mesoporous organosilica materials. © 2004 Elsevier Inc. All rights reserved.

Details

Title: Bridged amine-functionalized mesoporous organosilica materials from 1,2-bis(triethoxysilyl)ethane and bis[(3-trimethoxysilyl)propyl]amine
Authors: Mohammad A Wahab (Author) - Pusan National University, South Korea
I Kim (Author) - Pusan National University, South Korea
C S Ha (Author) - Pusan National University, South Korea
Publication details: Journal of Solid State Chemistry, Vol.177(10), pp.3439-3447
Publisher: Academic Press
Date published: 2004
DOI: 10.1016/j.jssc.2004.05.062
ISSN: 0022-4596
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450359202621
Output Type: Journal article

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Web Of Science research areas: Chemistry, Inorganic & Nuclear; Chemistry, Physical