Mesoporous ethanesilica materials with bimodal and trimodal pore-size distributions synthesised in the presence of cobalt ions

South African Journal of Science

 
 
Field Value
 
Title Mesoporous ethanesilica materials with bimodal and trimodal pore-size distributions synthesised in the presence of cobalt ions
 
Creator Coville, Neil J. Tshavhungwe, Alufelwi M.
 
Subject Physical sciences cobalt; ethanesilica; mesoporous materials; porosity; sol-gel synthesis
Description Mesoporous organosilica materials containing ethane groups in their framework were formed with two and three pore sizes (i.e. bimodal and trimodal pores) when synthesised by the sol-gel method in the presence of cobalt ions. The compounds 1,2-bistrimethoxysilylethane and tetraethylorthosilicate were used as silicon sources and the reactions were done in the presence of a surfactant, which served as a template. Diffuse reflectance infrared Fourier transform spectroscopy revealed that organic functional groups were incorporated into the ethanesilica. Powder X-ray diffraction and nitrogen adsorption data indicated that the mesophase and textural properties (surface area, pore volume, pore diameter) of the materials were dependent on the ageing temperature, the amount/ratio of silica precursors and cobalt ion incorporation. Secondary mesopores were drastically reduced by changing the ratio of silicon precursors.
 
Publisher AOSIS
 
Contributor University of the Witwatersrand, NRF, DST
Date 2010-07-26
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — na
Format application/pdf text/html text/xml
Identifier 10.4102/sajs.v106i7/8.213
 
Source South African Journal of Science; Vol 106, No 7/8 (2010); 5 pages 1996-7489 0038-2353
 
Language eng
 
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Rights Copyright (c) 2010 Neil J. Coville, Alufelwi M. Tshavhungwe https://creativecommons.org/licenses/by/4.0
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