8-羟基喹啉改性DK110树脂的合成及其对Cu^(2+)的吸附性能  

Synthesis and adsorption of 8-hydroxyquinoline modified DK110 resin for Cu^(2+)

作　　者：温全武[1] 刘春萍[1] 刘军深[1] 胡京汇 陈静[1] 张彦培 

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264025

出　　处：《功能材料》2014年第11期11066-11070,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21171085);山东省自然科学基金资助项目(ZR2010BM027;ZR2009BL014)

摘　　要：以大孔丙烯酸系弱酸树脂DK110为大分子骨架,通过与5-氯甲基-8-羟基喹啉的接枝反应,合成了带8-羟基喹啉螯合功能基的改性树脂HQDK110。探讨了HQDK110树脂对Cu2+在不同温度、不同pH值、不同浓度等条件下的静态吸附性能、动态吸附性能及脱附性能。结果表明,HQDK110树脂对Cu2+具有良好的吸附作用,实验条件下,25℃时HQDK110树脂对Cu2+的吸附量达2.278 mmol/g。HQDK110树脂对Cu2+的动力学吸附很好地符合了拟二级动力学模型,吸附过程符合Langmuir吸附等温式。树脂对Cu2+的去除率在较宽的浓度范围内达到98%以上,吸附Cu2+后的树脂在0.1 mol/L的盐酸溶液中的脱附率达96.88%。树脂有良好的重复使用性能。A novel 8-hydroxyquinoline modified DK110 resin（ HQDK110） was synthesized by using weak-acidic macroporous acrylic acid resin DK110 as macromolecular skeleton through graft modification of 5-chloromethyl 8-hydroxyquinoline on it. The static,dynamic adsorption and desorption properties of Cu2 ＋on the HQDK110 resin were researched respectively under different temperature,pH value and metal ion concentration. The results showed that the resin had good adsorption effect to Cu2 ＋,and adsorption capacity was 2.278 mmol/g under experimental conditions when the temperature was 25 ℃. Adsorption process was better described by the pseudo second-order kinetics equation and Langmuir adsorption isotherm. The removal efficiency of Cu2 ＋was found to be more than 98% in wide concentration range and desorption efficiency was to 96. 88% in 0. 1 mol /L HCl solution. The resin had good reusability.

关 键 词：8-羟基喹啉 HQDK110树脂 吸附动力学 等温吸附 CU2+ 

分 类 号：O647.31[理学—物理化学]