电纺聚丙烯腈基活性碳纳米纤维及其亚甲基蓝吸附性能Adsorption Property of Methylene Blue onto the Electrospun PAN-based Activated Carbon Nanofibres
吴丹;汤营茂;缪清清;肖荔人;钱庆荣;陈庆华;
摘要(Abstract):
以聚丙烯腈(PAN)和N,N-二甲基甲酰胺(DMF)为原料,通过静电纺丝-CO2活化法制备PAN基活性碳纳米纤维,探讨活化温度对活性碳纳米纤维孔结构及孔径分布的影响,并研究了所制备的PAN基活性碳纳米纤维对亚甲基蓝(MB)的吸附性能.结果表明,随着活化温度的升高,PAN基活性碳纳米纤维的比表面积(SBET)、总孔容(Vtotal)和微孔容(Vmi)均增大,当活化温度达到950℃时,SBET、Vtotal、Vαmi、Vtmi和VDmi分别高达1 484.5 m2·g-1、0.709 cm3·g-1、0.680 cm3·g-1、0.666 cm3·g-1和0.659cm3·g-1;Langmuir模型较Freundlich模型更适合描述所制备的PAN基活性碳纳米纤维对MB的吸附过程,且ACF950在(25±1)℃对MB的饱和吸附量高达270 mg·g-1.
关键词(KeyWords): 静电纺丝;活性碳纳米纤维;吸附性能;亚甲基蓝
基金项目(Foundation): 教育部留学回国人员科研启动基金项目([2011]1568);; 福建省教育厅资助项目(JA10087);; 福建省发改委产业技术开发专项项目重大项目([2011]352)
作者(Authors): 吴丹;汤营茂;缪清清;肖荔人;钱庆荣;陈庆华;
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