Nanosize effects of sulfonated carbon nanofiber fabrics for high capacity ion-exchanger
Nanosize effects of sulfonated carbon nanofiber fabrics for high capacity ion-exchanger
复制标题
DOI：
10.1039/c2ra20103h
复制
发表时间：
2012-01-01
期刊：
影响因子：
3.9
通讯作者：
Tanioka, Akihiko
中科院分区：
文献类型：
--
作者：
Imaizumi, Shinji;Matsumoto, Hidetoshi;Tanioka, Akihiko
本文报道了一种新型的离子交换碳纳米材料--表面磺化碳纳米纤维(S-CNF)织物，它具有高比表面积、高离子交换和吸附能力。采用静电纺丝、连续碳化、磺化等工艺制备了含SOH基团的S-碳纤维织物。我们观察到了纳米效应，其中比表面积、离子交换和吸附能力随着纤维直径的减小而显著增加。制得的纤维直径为80 nm时，其总孔表面积为32.2m2 g(-1)，离子交换容量为2.94mmolg(-1)，对亚甲基蓝(MB)的吸附容量为943.1 mg g(-1)。甲基溴的吸附容量是商业活性碳的两倍。这些结果表明，具有离子基团的表面功能化CNF织物是一种很有前途的大容量离子交换器材料。
In the present paper, we report a novel ion-exchange carbon nanomaterial, surface sulfonated carbon nanofiber (S-CNF) fabrics, with a high surface area and high ion-exchange and adsorption capacities. S-CNF fabrics bearing SO3H groups were prepared by electrospinning, successive carbonization and sulfonation. We observed a nanosize effect, in which the surface area, and ion-exchange and adsorption capacities significantly increase with a decrease in the fiber diameter. The prepared fabrics with a diameter of 80 nm had the maximum values for the total pore surface area of 32.2 m 2 g(-1), the ion-exchange capacity of 2.94 mmol g(-1), and an adsorption capacity of 943.1 mg g(-1) for methylene blue (MB). The MB adsorption capacity is two times higher than that of commercial activated carbons. These results highlight the fact that the surface functionalized CNF fabrics with ionic groups are promising materials for high-capacity ion-exchangers.