Guo Rong, Wang Ran, Yin Juanjuan, Jiao Tifeng, Huang Haiming, Zhao Xinmei, Zhang Lexin, Li Qing, Zhou Jingxin, Peng Qiuming
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China.
Nanomaterials (Basel). 2019 Jan 20;9(1):127. doi: 10.3390/nano9010127.
Dye wastewater is one of the most important problems to be faced and solved in wastewater treatment. However, the treatment cannot be single and simple adsorption due to the complexity of dye species. In this work, we prepared novel composite fiber adsorbent materials consisting of ε-polycaprolactone (PCL) and beta-cyclodextrin-based polymer (PCD) by electrospinning. The morphological and spectral characterization demonstrated the successful preparation of a series of composite fibers with different mass ratios. The obtained fiber materials have demonstrated remarkable selective adsorption for MB and 4-aminoazobenzene solutions. The addition of a PCD component in composite fibers enhanced the mechanical strength of membranes and changed the adsorption uptake due to the cavity molecular structure via host⁻guest interaction. The dye removal efficiency could reach 24.1 mg/g towards 4-aminoazobenzene. Due to the admirable stability and selectivity adsorption process, the present prepared beta-cyclodextrin-based composite fibers have demonstrated potential large-scale applications in dye uptake and wastewater treatment.
染料废水是废水处理中面临和需要解决的最重要问题之一。然而，由于染料种类的复杂性，处理方法不能单一且简单地采用吸附法。在本研究中，我们通过静电纺丝制备了由ε-聚己内酯（PCL）和β-环糊精基聚合物（PCD）组成的新型复合纤维吸附材料。形态学和光谱表征表明成功制备了一系列不同质量比的复合纤维。所获得的纤维材料对亚甲基蓝（MB）和4-氨基偶氮苯溶液表现出显著的选择性吸附。复合纤维中PCD组分的加入增强了膜的机械强度，并通过主客体相互作用的空腔分子结构改变了吸附量。对4-氨基偶氮苯的染料去除效率可达24.1 mg/g。由于具有良好的稳定性和选择性吸附过程，目前制备的β-环糊精基复合纤维在染料吸附和废水处理方面显示出潜在的大规模应用前景。
