Zhao Rui, Wang Yong, Li Xiang, Sun Bolun, Jiang Ziqiao, Wang Ce
Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
Colloids Surf B Biointerfaces. 2015 Dec 1;136:375-82. doi: 10.1016/j.colsurfb.2015.09.038. Epub 2015 Sep 26.
A novel water-insoluble sericin/β-cyclodextrin/poly (vinyl alcohol) composite nanofiber adsorbent was prepared by electrospinning and followed by thermal crosslinking for removal of cationic dye methylene blue from aqueous solution. Fourier transform infrared spectroscopy and solubility experiments confirmed that sericin and β-cyclodextrin were incorporated into the nanofibers and the crosslinking reaction occurred successfully. Kinetics, isotherms and thermodynamics analysis were studied for adsorption of methylene blue. The adsorption process is better fitted with the pseudo-second-order model and Langmuir isotherm model. The maximum adsorption capacities are 187.97, 229.89, and 261.10mg/g at the temperatures 293, 313 and 333 K, respectively. Thermodynamic parameters showed that methylene blue adsorption was endothermic and spontaneous. In addition, the fiber membrane adsorbent could be easily separated from dye solution and showed high recyclable removal efficiency. All these results suggest that crosslinked sericin/β-cyclodextrin/poly(vinyl alcohol) composite nanofibers could be potential recyclable adsorbents in dye wastewater treatment.
通过静电纺丝制备了一种新型水不溶性丝胶蛋白/β-环糊精/聚乙烯醇复合纳米纤维吸附剂，并通过热交联以从水溶液中去除阳离子染料亚甲基蓝。傅里叶变换红外光谱和溶解性实验证实丝胶蛋白和β-环糊精被掺入纳米纤维中，并且交联反应成功发生。研究了亚甲基蓝吸附的动力学、等温线和热力学分析。吸附过程更符合准二级模型和朗缪尔等温线模型。在温度293、313和333K时，最大吸附容量分别为187.97、229.89和261.10mg/g。热力学参数表明亚甲基蓝吸附是吸热且自发的。此外，纤维膜吸附剂可容易地从染料溶液中分离出来，并显示出高的可循环去除效率。所有这些结果表明，交联的丝胶蛋白/β-环糊精/聚乙烯醇复合纳米纤维可能是染料废水处理中有潜力的可循环吸附剂。
