✦ LIBER ✦

Preparation and adsorption properties of metal ions of crosslinked chitosan azacrown ethers

✍ Scribed by Zhikuan Yang; Yuting Wang; Yurong Tang

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 155 KB
Volume: 74
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19991220)74:13<3053::aid-app7>3.0.co;2-6

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✦ Synopsis

The novel azacrown ether chitosan derivatives (CCAE-I, CCAE-II) were prepared by reaction between crosslinked chitosan with epoxy-activated azacrown ethers. Their structures were confirmed by elemental FTIR spectra analysis and X-ray diffraction analysis. The adsorption and selectivity properties of the crosslinked chitosan azacrown ethers for Pb 2ϩ , Cu 2ϩ , Cr 3ϩ , Cd 2ϩ , and Hg 2ϩ were also investigated. The experimental results showed that they have high adsorption capacity for Cu 2ϩ , Cd 2ϩ , and Hg 2ϩ . The adsorption capacity of CCAE-II is higher than CCAE-I for Cd 2ϩ and Hg 2ϩ . The selectivity properties of CCAE are better than chitosan and crosslinked chitosan.

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