期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 192, 期 3, 页码 949-955出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2011.05.042
关键词
Cu (II); Magnetic ion imprinted polymer; Surface imprinted technique; Sol-gel process
资金
- National Science Fund for Distinguished Young Scholars [50725825]
- National Natural Science Foundation of China [50978132]
- Natural Science Foundation of Jiangxi Province of China [2009GQH0083]
- Science and Technology Supported Program of Jiangxi Province of China [2009BSB09800]
A novel Cu (II) magnetic ion-imprinted polymer (MIIP) was synthesized by surface imprinting technique combined with a sol-gel process. The adsorbent of Cu (II)-MIIP shows higher capacity and selectivity than that of magnetic non-imprinted polymers (MNIP). Adsorption capacities of Cu (II)-MIIP and MNIP are 24.2 and 5.2 mg/g for Cu (II) ions, respectively. The selectivity coefficients of the Cu (II)-MIIP for Cu (II)/Zn (II) and Cu (II)/Ni (II) are 91.84 and 133.92, respectively. Kinetics studies show that the adsorption process obeys pseudo-second-order rate mechanism with an initial adsorption rate of 132.48 for Cu (II)-MIIP and 2.41 mg g(-1) min(-1) for MNIP. In addition, no obvious decrease was observed after up to five adsorption cycles, indicating that the Cu (II)-MIIP is of high stability. (C) 2011 Elsevier B.V. All rights reserved.
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