Water-insoluble b-cyclodextrin polymer crosslinked by citric acid: synthesis and adsorption properties toward phenol and methylene blue

Water-insoluble b-cyclodextrin polymer (b-CDP) crosslinked by citric acid was obtained with a yield of 65% through an environment friendly synthesis procedure. FT-IR spectra disclosed that the hydroxyl groups of b-CD had reacted and condensated with the carboxyl groups of citric acid, and at the sam...

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Bibliographic Details
Published in:Journal of inclusion phenomena and molecular recognition in chemistry 2009-04, Vol.63 (3-4), p.195-201
Main Authors: Zhao, Dong, Zhao, Liang, Zhu, Cheng-Shen, Huang, Wei-Qing, Hu, Jin-Lin
Format: Article
Language:English
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Summary:Water-insoluble b-cyclodextrin polymer (b-CDP) crosslinked by citric acid was obtained with a yield of 65% through an environment friendly synthesis procedure. FT-IR spectra disclosed that the hydroxyl groups of b-CD had reacted and condensated with the carboxyl groups of citric acid, and at the same time the structural characteristics of b-CD were essentially maintained in b-CDP. The b-CDP exhibited notable adsorption capability toward phenol (q max = 13.8 mg g) and especially large adsorption capability toward methylene blue (q max = 105 mg g). The concentration of methylene blue in water could be reduced to 0.11 mg L by the b-CDP, indicating the excellent adsorption sensitivity of b-CDP toward methylene blue. The adsorption results disclosed that the interior cavity and inclusion property of b-CD were maintained in the synthesized b-CDP.
ISSN:0923-0750
DOI:10.1007/s10847-008-9507-4