ISSN:
1573-1111
Keywords:
monochlorotriazinyl β-cyclodextrin
;
silica gel
;
Raman spectroscopy
;
porosity analysis
;
, sorption capacities
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Different supports, containing a new derivative ofβ-cyclodextrin – monochlorotriazinylβ-cyclodextrin (β-CDMCT) – used forthe reduction of pollutants in waste water, have beenprepared. They are based on silica gel, initially eithercoated with polyethyleneimine (PEI) or grafted with3-aminopropyltrimethoxysilane, functionalized in asecond step with β-CDMCT. In order to obtainsorbents with high β-cyclodextrin content andmaximum accessibility of the β-CD cavity, thefuntionalization was studied while varying experimentalconditions. Thermogravimetry, Raman spectroscopy,specific surface area and pore size distribution were usedfor the characterization of supports. Sorption experimentsshow that these sorbents have sorption capacities towardssome organic pollutants. The mechanism of sorption is bothphysical adsorption in the polymer network (for supportsobtained by coating) and/or the formation of an inclusioncomplex between β-CDMCT and guest molecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008169111023
