分析测试学报2011，Vol.30Issue(2)：135-139,145,6.DOI:10.3969/j.issn.1004-4957.2011.02.004
镍离子(Ⅱ)印迹聚合物的制备及性能研究
Preparation and Characteristics of Nickel( Ⅱ ) Ion-imprinted Polymer
杨利峰 1王群英 1张随成 2胡圣虹2
作者信息
- 1. 中国地质大学,材料科学与化学工程学院,湖北,武汉,430074
- 2. 中国地质大学,生物地质与环境地质教育部重点实验室,湖北,武汉,430074
- 折叠
摘要
Abstract
A new nickel ( Ⅱ ) ion-imprinted polymer (IIP) material was synthesized by using bulk polymerization of acrylamide as monomer, divinylbenzene as crosslinking agent, 2, 2-azobis-sobutyronitrile as initiator and methanol as solvent in the presence of nickel( Ⅱ ). The structure of polymer was studied by IR spectrometry. The result indicated that some characteristic groups in the ion-imprinted polymer interacted with the template. To get the optimal reaction conditions, the effect of the molar ratio of Ni2+/monomer and monomer/crosslinker, and the volume of solvent on adsorption properties of Ni( Ⅱ ) imprinted polymers was investigated. The best adsorption capacity of the polymer adsorbent was obtained when uisng Ni ( Ⅱ ) - functional monomer of 1: 4 ( molar ratio), functional monomer- crosslinking agent of I: 5( molar ratio) and solvent volume of 10 mL. The adsorption and selectivity capacity of nickel ( Ⅱ ) ion-imprinted polymer for Ni ( Ⅱ ) ion were studied. The results showed that the imprinted polymer had good affinity for Ni2+. The maximum adsorption capacity was 1.26 rog/g, which corresponded with the saturated adsorption ( Qmsx ) of 1.35 mg/g. The sorption equilibrium time was 35 min and the optimum pH for quantitative nickel retention was 8.0. The relatively selective factor(K') of Ni to other metal ions were greater than 1. The IIP could be repeatedly used with high selectivity and stability for Ni ( Ⅱ ).关键词
镍离子/离子印迹聚合物/选择性吸附Key words
nickel( Ⅱ )/ ion-imprinted polymer/ selective adsorption分类
化学化工引用本文复制引用
杨利峰,王群英,张随成,胡圣虹..镍离子(Ⅱ)印迹聚合物的制备及性能研究[J].分析测试学报,2011,30(2):135-139,145,6.
