膜科学与技术

层层组装法制备[CTS/SA]c/lPET纳米纤维膜及动态吸附Cu2+

作者：漆麟，汪滨，王娇娜，李从举

单位： 1. 北京服装学院材料科学与工程学院，北京100029； 2. 北京市服装材料研究开发与评价重点实验室，北京100029

关键词：纳米纤维膜；铜离子；层层组装；动态吸附

出版年,卷(期):页码： 2017,37(1):75-80

摘要：

静电纺纳米纤维薄膜由于其高孔隙率和大比表面积，因而广泛应用于重金属离子吸附领域。利用层层自组装法，以聚对苯二甲酸乙二醇酯为基底制备了不同浓度和层数的壳聚糖/海藻酸钠复合纳米纤维膜并用其处理水中铜离子(Cu2+)。壳聚糖和海藻酸钠聚电解质溶液最佳浓度均为10.5 g·L-1，最适宜层数为10层，当溶液pH为6时，Cu2+去除率可达99.9%，使用时长达12 h以上。复合膜具有高效率和良好的亲水性等特点，具有很好的应用潜力。

Due to the large pore size and specific surface area, electrospun nanofiber membranes have comprehensive prospects in application in heavy metal ion adsorption. In this work, a polyethylene terephthalate nanofibrous membrane for copper ion removal supported on layer-by-layer assembly coatings was prepared via electrospinning. The dynamic adsorption property has been studied. The best conditions of the membrane for copper ion removal were as follow: The optimal concentration of chitosan/sodium alginate was 10.5 g•L-1 and the most appropriate layers are 10 layers. The optimal pH value for copper ion removal was 6.0, and the best removal efficiency in this experiment was 99.9 %. The filtration time could last 12 h. It could be found that this nanofibrous membrane for copper ion dynamic adsorption was hydrophilic and high efficient.

第一作者简介：漆麟（1991-），男，江西南昌人，硕士研究生，从事层层组装制备纳米纤维复合膜用于重金属离子处理。*通讯作者：李从举，男，博士，教授，博士生导师，主要从事纳米技术与纤维材料研究。Email: congjuli2014@126.com

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