Abstract

In this paper, the adsorption capacity of CNT modified polyacrylonitrile (PAN) film on copper ions under different conditions was studied by the adsorption experiment of the prepared multilayer diazo resin acidified carbon nanotubes/PAN composite film. The concentration of copper ion solution before and after adsorption was measured by inductively coupled plasma (ICP). The results show that the adsorption capacity of the pan film modified by CNT increases first and then reaches the adsorption equilibrium with the increase of the adsorption time of copper ion, and the adsorption capacity of the pan film modified by CNT increases with the increase of the initial concentration of copper ion and the external temperature With the increase of solution pH, the adsorption capacity of CNT modified polyacrylonitrile membrane to copper ion increases first and then decreases; after multiple desorption/adsorption of the modified membrane which has reached adsorption equilibrium, the membrane still has CNT adsorption capacity to copper ion, indicating that the membrane has excellent recycling performance.

摘要

本文通过制备的多层重氮树脂酸化碳纳米管/PAN复合膜的吸附实验研究了CNT改性聚丙烯腈(PAN)膜在不同条件下对铜离子的吸附能力。通过电感耦合等离子体(ICP)测量吸附前后铜离子溶液的浓度。结果表明，随着铜离子吸附时间的增加，CNT改性的锅膜的吸附容量先增加后达到吸附平衡，CNT改性的锅膜的吸附容量随着铜离子吸附时间的增加而增加。铜离子的初始浓度和外部温度随着溶液 pH 的增加，CNT改性聚丙烯腈膜对铜离子的吸附能力先增大后减小；达到吸附平衡的改性膜经过多次解吸/吸附后，膜仍具有对铜离子的CNT吸附能力，表明该膜具有优良的回收性能。