摘要：为此制备了一种聚丙烯腈(PAN)/羧基化多壁碳纳米管(MWCNTs-COOH)复合纳米纤维膜并探究其对废水中 Pb²⁺ 的吸附效果。将 MWCNTs-COOH 与 PAN 混合成溶液 ，通过静电纺丝技术，成功制备了 PAN/MWCNTs-COOH复合纳米纤维膜 ；采用扫描电子显微镜观察其形貌；并在 pH=3，5，7 的条件下进行吸附实验 ，探究 PAN/MWCNTs-COOH 复合纳米纤维膜对 Pb²⁺吸附性能及吸附机理 ，用准一级和准二级动力学模型模拟吸附动力学进一步阐述实验数据；通过过滤吸附实验进一步研究 PAN/MWCNTs-COOH 复合纳米纤维膜在实际应用中对水中 Pb²⁺ 的清除性能 。结果表明所制备的纳米纤维膜具有致密网状结构，形态良好；与 pH=3，5 条件下相比 ，在 pH=7 时 ，PAN/MWCNTs-COOH 复合纳米纤维膜吸附性能最优 ，对 Pb 吸附率达到 70% 及以上 ，并在 80 min 左右达到平衡；吸附动力学研究表明 PAN/MWCNTs-COOH 复合纳米纤维膜对 Pb²⁺可能是化学吸附；过滤实验显示 PAN/MWCNTs-COOH 复合纳米纤维膜对 Pb²⁺ 的吸附量高于空白对照纳米纤维膜(CON)，呈现出优良过滤性能。 

Abstract：A polyacrylonitrile (PAN)/carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) composite nanofiber membrane was prepared and its adsorption effect on Pb²⁺ in wastewater was investigated. The MWCNT-COOH and PAN were mixed into solution, and the PAN/MWCNTs-COOH composite nanofiber membrane was prepared by electrospinning technology. The morphology was observed by scanning electron microscope. Adsorption experiments were carried out at pH=3, 5 and 7 to explore the adsorption performance and mechanism of lead ions on PAN/MWCNTs-COOH composite nanofiber membranes. The adsorption kinetics were simulated by quasi-first-order and quasi-second-order kinetic models to further elaborate the experimental data. Filtration adsorption experiments were conducted to further study the removal performance of lead ions in water by PAN/MWCNTs-COOH composite nanofiber membrane in practical application. The prepared nanofiber membrane have a dense network structure and good morphology. Compared with the conditions of pH=3 and 5, the adsorption performance of PAN/MWCNTsCOOH composite nanofiber membrane is the best at pH=7, and the adsorption rate of lead ions reaches 70% and above, and reaches equilibrium for about 80 min. The adsorption kinetics study indicates that PAN/MWCNTs-COOH composite nanofiber membrane may be chemically adsorbed for lead ions. Filtration experiments show that the adsorption capacity of PAN/MWCNTs-COOH composite nanofiber membrane for lead ions is higher than that of blank control nanofiber membrane (CON), showing excellent filtration performance. 

关键词：羧基化多壁碳纳米管；静电纺丝；纳米纤维膜；吸附；铅离子 

Keywords：carboxylated multiwalled carbon nanotubes; electrospinning; nanofiber membrane; adsorption; lead ion 

基金：浙江省公益技术应用研究项目(LGF22E030007)，浙江中医药科技计划项目(2021ZQ024)，浙江医药卫生科技计划项目(2020RC085) 

冯钰翡，赵凯，胡正博，等.聚丙烯腈/羧基化碳纳米管纳米纤维膜制备及对铅离子的吸附效果[J].工程塑料应用，2023，51(4)：105?110.
Feng Yufei，Zhao Kai，Hu Zhengbo，et al. Preparation of polyacrylonitrile/carboxylated carbon nanotubes nanofiber membrane and its adsorption effect on lead ions[J]. Engineering Plastics Application，2023，51(4)：105?110. 

　

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