Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5357875 | Applied Surface Science | 2010 | 6 Pages |
Abstract
SBA-15 nanoporous silicas functionalized with amine-, thiol-, vinyl-, phenyl- and cyano surface groups were synthesized by using the amphiphilic block copolymer P123 as the structure-directing agent. The obtained materials have a well-developed porous structure - the values of specific surface area are in the range 800-950Â m2/g and the sizes of cylindrical mesopores are in the range 7.4-8.6Â nm. It was established that the size of the mesopores strongly depends even on small amounts of co-monomers co-condensing with TEOS. Adsorption of Zn(II) ions at the SBA-15/NaCl interface was investigated by means of the radioactive isotope tracer technique over the pH range of 3-11. Surface charge density, adsorption density, pH50% and ÎpH10-90% parameters for different concentrations of the carrying electrolyte were evaluated and discussed.
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Chemistry
Physical and Theoretical Chemistry
Authors
M. Barczak, E. Skwarek, W. Janusz, A. DÄ
browski, S. Pikus,