高邻位热固性酚醛基纳米活性炭纤维膜的制备及吸附性能

Preparation and Adsorption Performance of High-Ortho Thermosetting Phenolic Resin Based Activated Carbon Nano Fibers

以合成的高邻位热塑性酚醛为模板,通过与甲醛的加成反应制备了高邻位热固性酚醛树脂,经溶液静电纺丝、盐酸溶液固化获得了纳米酚醛纤维,最终利用KOH活化获得了高邻位热固性酚醛基纳米活性炭纤维。利用红外光谱、X射线衍射、热重分析和扫描电镜分析了制备物的结构、性能变化,并观察了纳米纤维的表面形貌;通过比表面积和亚甲基蓝(MB)/碘吸附分析了纳米活性炭纤维的孔结构和吸附性能,获得了比表面2606 m^(2)/g、MB吸附量1643.0 mg/g、碘吸附量2731.1 mg/g的高邻位热固性酚醛基纳米活性炭纤维,实现了低污染、高活性纳米炭纤维的制备。

The nano phenolic fibers were prepared by the HCl solution curing of phenolic as-spun filaments derived from the electro-spinning of the high-ortho thermosetting phenolic solution,which was synthesized by the reaction between formaldehyde and high-ortho novolac phenolic resin template.Finally,the phenolic based activated carbon nano fibers were fabricated through the activation by KOH.The microscopic structure,thermal properties and fiber morphology were investigated by FT-IR,XRD,TGA,and SEM.The pore structures and absorption performance were characterized by BET and MB/iodine absorption.The specific surface area and MB/iodine absorption quantity are dramatically increased up to 2606 m^(2)/g,1643.0 mg/g,and 2731.1 mg/g,respectively.Consequently,the high-ortho thermosetting phenolic based activated carbon nano fibers with the absorption activation were prepared through a green method.