Preparation, characterization, and kinetic study of end opened carbon nanotubes incorporated polyacrylonitrile electrospun nanofibers for the adsorption of pyrene from aqueous solution
Preparation, characterization, and kinetic study of end opened carbon nanotubes incorporated polyacrylonitrile electrospun nanofibers for the adsorption of pyrene from aqueous solution
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DOI：
10.1016/j.cej.2014.07.127
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发表时间：
2015-01-01
影响因子：
15.1
通讯作者：
Kim, Hern
中科院分区：
文献类型：
--
作者：
Jadhav, Arvind H.;Mai, Xuan Thang;Kim, Hern
采用简单的电纺法制备了端面开孔碳纳米管与聚丙烯腈电纺纳米纤维。采用高酸氧化法制备了开放的尖端氧化碳纳米管。采用水平电纺法制备了成功的电纺纳米纤维。用FT-IR、扫描电子显微镜、热重分析、透射电子显微镜和分散现象对所制备的纳米纤维的性能和形貌进行了表征，结果表明氧化型碳纳米管具有开放的尖端，具有多种有机官能团，可以有效地用于吸附现象。测试了成功制备和表征的纳米纤维对水溶液中芘的吸附性能。结果表明，2wt%的氧化开孔碳纳米管与聚丙烯腈聚合物在室温下接触30min，对芘的吸附率达到96%。考察了不同实验条件下的吸附容量，考察了温度、o-CNTs负载量、接触时间等因素对吸附的影响。此外，还确定了动力学模型。对复合纳米纤维的再生和回收性能进行了研究。(C)2014爱思唯尔B.V.保留所有权利。
End opened carbon nanotubes assimilated with polyacrylonitrile electrospun nanofibers were prepared by simple electrospinning method. The open tips oxidized carbon nanotubes were obtained by using elevated acid oxidation method. The successful electrospun nanofibers were prepared using horizontal electrospinning method. The properties and morphology of these prepared nanofibers were characterized by FT-IR, SEM, TGA, TEM, and dispersion phenomenon which showed that oxidize carbon nanotubes possess open tips with various organic functional groups and it can be effectively utilized in adsorption phenomenon. Successfully prepared and characterized nanofibers were tested for the adsorption of pyrene from aqueous solution. Results showed that, 2 wt% of oxidized open tips carbon nanotubes with respect to polyacrylonitrile polymer achieved 96% adsorption of pyrene in 30 min contact time at room temperature. The adsorption capacity was studied under different experimental conditions and their effects on adsorption such as temperature, amount of o-CNTs loading, and contact time were also studied. In addition, kinetics models were also determined. The regeneration and recyclability of composite nanofibers were also studied. (C) 2014 Elsevier B.V. All rights reserved.