聚吡咯嵌入电纺纳米纤维聚醚砜膜对银离子的吸附。
Adsorption of silver ions on polypyrrole embedded electrospun nanofibrous polyethersulfone membranes.
机构信息
Department of Mechanical Engineering, Chang Gung University, Tao-Yuan 333, Taiwan.
Department of Chemical and Materials Engineering, Chang Gung University, Tao-Yuan 333, Taiwan.
出版信息
J Colloid Interface Sci. 2014 Apr 15;420:145-51. doi: 10.1016/j.jcis.2014.01.011. Epub 2014 Jan 16.
In this study we developed polypyrrole embedded electrospun nanofibrous polyethersulfone nanofibrous membranes for the removal of silver ions. Polypyrrole and polyethersulfone dissolved in N-methyl-2-pyrrolidone (NMP) were electrospun into nanofibrous membranes via an electrospinning process. The morphology of as-spun polypyrrole/polyethersulfone nanofibers was examined by scanning electron microscopy. The average diameter of electrospun nanofibers ranged from 410 nm to 540 nm. The adsorption capability of nanofibrous polypyrrole/polyethersulfone membranes was measured and compared with that of bulk polypyrrole. The influence of various process conditions on adsorption efficiency was also examined. The experimental results suggested that the electrospun nanofibrous membranes exhibited good silver ion uptake capabilities. The metal uptake of nanofibrous membranes increased with the initial metal ion concentrations and the pH value, while decreased with the temperature and the filtering rate of the solutions. Furthermore, the electrospun membrane could be reused after the recovery process.
在这项研究中，我们开发了一种嵌入聚吡咯的静电纺丝纳米纤维聚醚砜纳米纤维膜，用于去除银离子。聚吡咯和聚醚砜溶解在 N-甲基-2-吡咯烷酮（NMP）中，通过静电纺丝工艺纺成纳米纤维膜。通过扫描电子显微镜检查了未处理的聚吡咯/聚醚砜纳米纤维的形态。电纺纳米纤维的平均直径范围为 410nm 至 540nm。测量了纳米纤维聚吡咯/聚醚砜膜的吸附能力，并与块状聚吡咯进行了比较。还检查了各种工艺条件对吸附效率的影响。实验结果表明，静电纺丝纳米纤维膜具有良好的银离子吸附能力。纳米纤维膜对金属的吸收随初始金属离子浓度和 pH 值的增加而增加，随温度和溶液的过滤速率的降低而降低。此外，电纺膜在回收过程后可以重复使用。
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