化工进展2017，Vol.36Issue(9)：3422-3428,7.DOI:10.16085/j.issn.1000-6613.2016-2425
电化学脱除Pb2+印迹复合膜的制备及其性能
Preparation of electrochemical removal lead ion imprinted composite film and its performance
摘要
Abstract
Ion-surface imprinting technology has been widely used to remove heavy metal ions existed in waste water,due to its high selectivity to the target ions and good chemical stability. In this paper, electroactive surface-imprinted composite film was prepared successfully using Pb2+ as the template ion, polyaniline(PANI)as the polymer matrix and hydroxylated carbon nanotubes(MWCNTs-OH)as imprinting substrate, during which,Pb2+ ions were eluted by applying constant positive potential to form imprinted cavities. The structures of MWCNTs-OH and imprinted film were characterized by Fourier transform infrared(FTIR)and X-ray diffraction(XRD). The Pb2+ ion separation performance of the film was studied by electrochemical quartz crystal microbalance(EQCM)and atomic absorption spectrophotometer (AAS).The results showed that the maximum ion exchange capacity of composite film was 359mg/g and had excellent selectivity for Pb2+at the presence of other heavy metals ions(Cd2+,Zn2+,Co2+,Ni2+), with the separation factor of Pb2+/Zn2+ reached 418.74. Besides, the film exhibited outstanding cycle stability and rapid adsorption/desorption properties. In conclusion, this novel ion-surface imprinted composite film can be used for the efficient separation and recovery of Pb2+ in wastewater.关键词
离子表面印迹/电化学/分离/铅离子/废水Key words
ion-surface imprinting/electrochemistry/separation/lead ions/waste water分类
资源环境引用本文复制引用
刘秀红,王永洪,刘成岑,侯蒙杰,李龙..电化学脱除Pb2+印迹复合膜的制备及其性能[J].化工进展,2017,36(9):3422-3428,7.基金项目
山西省青年科技研究基金(2015021061)及太原理工大学校基金(2015MS014)项目. （2015021061）
