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首页> 外文期刊>Journal of Applied Polymer Science >A Novel Lead Ion-Imprinted Chelating Nanofiber: Preparation, Characterization, and Performance Evaluation
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A Novel Lead Ion-Imprinted Chelating Nanofiber: Preparation, Characterization, and Performance Evaluation

机译：一种新型的铅离子印迹螯合纳米纤维：制备，表征和性能评估。

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A novel Pb(II) ion-imprinted chelating nanofibers (nIIP), synthesized by combining electrospinning with surface ion imprinting technique, was reported in this study. nIIP was characterized with Fourier transmission infrared spectrometry and scanning electron microscopy, respectively. The performance of nIIP for Pb(II) sorption was conducted through a batch adsorption experiments. Experimental data showed that adsorption capacity of nIIP was much higher than that of non-ion imprinted chelating acrylic microfibers (mNIP) derived from commercial available acrylic microfibers, and adsorption behaviors agreed well with pseudo-second-order kinetic and Langmuir isotherm model. The values of Gibbs free energy change derived from experimental data suggested that the adsorption Pb(II) on nIIP is spontaneous and favorable at high temperature. In addition, nIIP had the highest selectivity among three tested fibrous adsorbents for Pb(II) from binary metal solution, the selectivity coefficients for Pb(II) from binary metal solution of Pb(II)/Cu(II), Pb(II)/Ni(II), and Pb(II)/Cd(II) onto nIIP were 47, 101, and 162, respectively. Besides, a forty adsorption/desorption cycles revealed that nIIP was a promising recyclable adsorbent. In conclusion, the novel nIIP is a highly effective adsorbent for enrichment and separation of Pb(II) in the presence of competitive ions in aqueous solution, and it is potential to be applied for recovering metals from heavy metal polluted industrial wastewater such as Pb(II)/Cd(II), Pb(II)/Ni(II), and Pb(II)/Cu(II) polluted wastewater. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41507.
机译：这项研究报道了一种新型的Pb（II）离子印迹螯合纳米纤维（nIIP），其是通过电纺丝和表面离子印迹技术相结合而合成的。 nIIP分别用傅立叶透射红外光谱和扫描电子显微镜表征。 nIIP吸附Pb（II）的性能是通过分批吸附实验进行的。实验数据表明，nIIP的吸附能力远高于市售丙烯酸微纤维衍生的非离子印迹螯合丙烯酸微纤维（mNIP），吸附行为与拟二级动力学和Langmuir等温线模型吻合得很好。从实验数据得出的吉布斯自由能变化值表明，nIIP上的Pb（II）吸附是自发的，并且在高温下有利。此外，nIIP在三种测试的纤维吸附剂中对二元金属溶液中的Pb（II）的选择性最高，对二元金属溶液中的Pb（II）/ Cu（II），Pb（II）的Pb（II）的选择性系数nIIP上的/ Ni（II）和Pb（II）/ Cd（II）分别为47、101和162。此外，四十次吸附/解吸循环表明，nIIP是一种很有前途的可回收吸附剂。总之，新型nIIP是在水溶液中存在竞争性离子时富集和分离Pb（II）的高效吸附剂，它有望用于从重金属污染的工业废水中回收金属Pb（ II）/ Cd（II），Pb（II）/ Ni（II）和Pb（II）/ Cu（II）污染的废水。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41507。

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