Synthesis and evaluation of chitosan aryl azacrown ethers as adsorbents for metal ions

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机构：
[1] Yang, Zhikuan
[2] Yuan, Yang
[3] Wang, Yuting
来源：
Yang, Zhikuan | 1600年 / John Wiley & Sons Inc, New York, NY, United States卷 / 77期
关键词：
Experimental; (EXP);
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摘要：
New azacrown ether chitosan derivatives (CTS-OC, CTS-NC) were synthesized by reaction of aryl mesocyclic diamine with the C6 hydroxyl group or C2 amino group in chitosan. Their structures were confirmed by elemental analysis, infrared spectra analysis, and X-ray diffraction analysis. The adsorption and selectivity properties of the aryl azacrown ethers chitosan derivatives for Hg2+, Cd2+, Pb2+, Ag+, and Cr3+ were also investigated. The experimental results showed that the two chitosan-azacrown ethers have good adsorption capacity for Pb2+, Cd2+, and Hg2+. The adsorption capacity of CTS-OC are higher than that of CTS-NC for Pb2+ and Cd2+. The chitosan-azacrown ethers have high selectivity for the adsorption of Pb2+ and Hg2+ with the coexistence of Cd2+. The selectivity properties of CTS-OC are better than those of CTS-NC.
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