戊二醛交联壳聚糖印迹材料对稀土中Cu(Ⅱ)的选择吸附性能研究  

SELECTIVE ADSORPTION PROPERTIES OF CHITOSAN CROSS-LINKED IMPRINTED MATERIALS TOWARDS Cu(II) IN RARE EARTH IONS

作　　者：王宇[1] 高建峰[1] 胡拖平[1] 安富强[1] 王艳君[1] 欧国利 周俊丽[1] 

机构地区：[1]中北大学理学院,太原030051

出　　处：《离子交换与吸附》2015年第6期562-568,共7页Ion Exchange and Adsorption

基　　金：国家国际科技合作专项项目(2011DFA51980);山西省科技合作专项项目(2011DFA51980);山西省自然科学基金项目(2013011040-3);煤转化国家重点实验室基金(J12-13-309);山西省攻关项目(20130321022-02)

摘　　要：采用离子印迹技术,以羧甲基壳聚糖(CMC)为原料、戊二醛(GLA)为交联剂,制得交联印迹材料GLA-Cu-CMC。研究了该材料对模板离子的结合性能与识别选择性。探讨了溶液的pH值、吸附时间等因素对吸附性能的影响。结果表明,材料GLA-Cu-CMC对Cu(II)可产生吸附作用,最大吸附量达到36.5mg/g;在Cu(II)/La(III)二元离子混合溶液下,该印迹材料仅对模板Cu(II)有吸附作用,而对La(III)没有吸附。Cross-linked imprinted materials GLA-Cu-CMC was prepared by ionic imprinting technique with carboxymethyl chitosan as raw material and glutaraldehyde as cross-linking agent. The binding properties and selective recognition of the materials towards the template ions and the rare earth ions were studied,and adsorption conditions,including initial p H value and adsorption time,were further determined. The results showed that GLA-Cu-CMC had good adsorption properties towards Cu(II) with the maximum adsorption capacity of 36.5mg/g. Futhermore,the imprinted materials can selective adsorption of Cu(II) from the mixture solution of Cu(II)/La(III),while La(III) in the mixture was not adsorbed.

关 键 词：壳聚糖 印迹材料 吸附 识别选择性 CU(II) 

分 类 号：O647.33[理学—物理化学]