Article ID Journal Published Year Pages File Type
5357875 Applied Surface Science 2010 6 Pages PDF
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 800-950 m2/g and the sizes of cylindrical mesopores are in the range 7.4-8.6 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 ΔpH10-90% parameters for different concentrations of the carrying electrolyte were evaluated and discussed.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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