Preparation of Cu（II）-imprinted Nanofibers from co-Electrospinning PVA and Imprinting Complex  

作　　者：LIU Xuan YANG Jiali TONG Lanyan ZHANG Qian LI Xiaowei CHEN Jida 

机构地区：[1]School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 404100, P. R. China

出　　处：《Chemical Research in Chinese Universities》2015年第6期1062-1065,共4页高等学校化学研究（英文版）

摘　　要：A novel method to prepare ion-imprinted nanofibers（IINFs）, i.e., the electrospinning and ion imprinting technique is presented. The electrospinning solution was composed of the matrix polymer and the imprinting complex. The model fibrous ion-imprinted adsorbent[Cu（II）-IINF] was synthesized from poly（vinyl alcohol） as the matrix po- lymer and the complex of Cu（II） and L-histidine as the imprinting complex. The product was characterized by Fourier transform infrared spectrometry（FTIR） and the scanning electron microscopy（SEM）, respectively. The adsorption of Cu（II）-IINF for Cu（II） was conducted by a batch of experiments. The adsorption capacity reached 114.75 mg/g at 45℃ and the selectivity coefficients of Cu（II）-IINF for Cu（II） relative to Pb（II）, Ni（II） and Zn（II） were 51.6, 54.4 and 66.3, respectively. In addition, Cu（II）-IINF also has good regeneration performance and the efficiency of adsor- bing Cu^2＋ is about 88.3% of the initial adsorption capacity after five cycles. All these results demonstrate that the re- ported method for preparing fibrous ion-imprinted adsorbents is feasible, and Cu（II）-IINF is a promising adsorbent for the efficient removal and recovery of coooer ions from the aqueous solution.A novel method to prepare ion-imprinted nanofibers（IINFs）, i.e., the electrospinning and ion imprinting technique is presented. The electrospinning solution was composed of the matrix polymer and the imprinting complex. The model fibrous ion-imprinted adsorbent[Cu（II）-IINF] was synthesized from poly（vinyl alcohol） as the matrix po- lymer and the complex of Cu（II） and L-histidine as the imprinting complex. The product was characterized by Fourier transform infrared spectrometry（FTIR） and the scanning electron microscopy（SEM）, respectively. The adsorption of Cu（II）-IINF for Cu（II） was conducted by a batch of experiments. The adsorption capacity reached 114.75 mg/g at 45℃ and the selectivity coefficients of Cu（II）-IINF for Cu（II） relative to Pb（II）, Ni（II） and Zn（II） were 51.6, 54.4 and 66.3, respectively. In addition, Cu（II）-IINF also has good regeneration performance and the efficiency of adsor- bing Cu^2＋ is about 88.3% of the initial adsorption capacity after five cycles. All these results demonstrate that the re- ported method for preparing fibrous ion-imprinted adsorbents is feasible, and Cu（II）-IINF is a promising adsorbent for the efficient removal and recovery of coooer ions from the aqueous solution.

关 键 词：Ion-imprinted technique ELECTROSPINNING NANOFIBER Selective adsorption Copper ion 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业] Q7-33[生物学—分子生物学]