Abstract In this paper, the adsorption of copper ions on the prepared multilayer diazo resin-graphene oxide/polyacrylonitrile composite membranes was studied, and the adsorption capacity of GO modified polyacrylonitrile membranes to copper ions under different conditions was explored. The concentration of copper ion solution before and after adsorption was measured by inductively coupled plasma (ICP). The results showed that the adsorption capacity of GO modified polyacrylonitrile membrane to copper ion increased first and then reached adsorption equilibrium with the increase of adsorption time of copper ion. With the increase of initial concentration of copper ion and external temperature, the adsorption capacity of GO modified polyacrylonitrile membrane to copper ion followed. With the increase of solution’s PH, the adsorption capacity of GO modified polyacrylonitrile membranes for copper ions first increased and then decreased. After several desorption/adsorption of the modified membranes which have reached the adsorption equilibrium, the membranes still have good adsorption capacity for copper ions, indicating that the membranes have excellent reuse performance.

中文翻译：

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聚丙烯腈中空纤维改性膜对重金属离子吸附的影响

摘要 本文研究了制备的多层重氮树脂-氧化石墨烯/聚丙烯腈复合膜对铜离子的吸附，探讨了GO改性聚丙烯腈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,GO改性聚丙烯腈膜对铜离子的吸附能力随着铜离子吸附时间的增加先增加后达到吸附平衡。随着铜离子初始浓度和外部温度的增加，GO改性聚丙烯腈膜对铜离子的吸附能力随之增加。随着溶液PH值的增加，GO改性聚丙烯腈膜对铜离子的吸附能力先升高后降低。改性膜经过多次解吸/吸附达到吸附平衡后，膜对铜离子仍具有良好的吸附能力，表明膜具有优良的再利用性能。