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

• Published in: 高等学校化学研究：英文版 2015 (6), p.1062-1065
• Main Author: LIU Xuan YANG Jiali TONG Lanyan ZHANG Qian LI Xiaowei CHEN Jida
• Format: Article
• Language: English
• Subjects: Cu（II）; 傅里叶变换红外光谱法; 制备方法; 印迹技术; 复合物; 纺丝技术; 聚乙烯醇; 铜（Ⅱ）
• ISSN: 1005-9040; 2210-3171

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.