静电纺丝法制备碳纳米纤维及其吸附性能  

Preparation of Carbon Nanofibers via Electrospinning Technique and Its Adsorption Properties

作　　者：潘新颖[1] 南辉[1] 韦浩民[1] 王刚[2] 林红[3] 陈慧媛[1] Pan Xinying;Nan Hui;Wei Haomin;Wang Gang;Lin Hong;Chen Huiyuan(Qinghai University,Xining 810016,China;Qinghai Nationalities University,Xining 810007,China;State Key Laboratory of New Ceramics&Fine Processing,Tsinghua University,Beijing 100084,China)

机构地区：[1]青海大学,青海西宁810016 [2]青海民族大学,青海西宁810007 [3]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《稀有金属材料与工程》2020年第2期567-571,共5页Rare Metal Materials and Engineering

基　　金：青海省科技厅项目(2017-GX-106,2017-GZ-794)。

摘　　要：以石墨烯、石墨粉、碳纳米管等材料为碳源,采用静电纺丝技术,随后经稳定和碳化过程,制备得到3种不同的碳纳米纤维。研究了碳纳米纤维在不同吸附条件下对铬离子的吸附性能。结果表明,碳纳米管纳米纤维表面粗糙度大且其石墨化程度最好,晶体结构更有序,比表面积也最高,这一特点有利于增大吸附材料对铬离子的吸附性能;在pH=3,温度为25℃时,碳纳米管纳米纤维对Cr(VI)的吸附量能达到52.8 mg/g。且循环使用5次后,其吸附率能达到初次吸附的60%,碳纳米管纳米纤维表现出最好的吸附性能。Carbon nanofibers were produced using graphene,graphite powder and carbon nanotubes as carbon sources by nozzle-less electrospinning followed by stabilization and carbonization process.The adsorption performance of carbon nanofibers to Cr(VI) ions under different test conditions was studied.It is found that carbon nanotubes-based nanofibers exhibit a large surface roughness,the best degree of graphitization,more ordered crystal structure,and the largest specific surface areas,which help to increase the adsorption performance of adsorbent materials to Cr(VI) ions.The adsorption capacity to Cr(VI) ions can reach 52.8 mg/g at pH=3,and T=25℃.Moreover,the adsorption capacity can be about 60% of the initial adsorption capacity after five cycles.

关 键 词：静电纺丝 碳纳米纤维 重金属离子 吸附 

分 类 号：TB383[一般工业技术—材料科学与工程] TB34