title: Kevlar based nanofibrous particles as robust, effective and recyclable absorbents for water purification.
abstract: Developing robust and recyclable absorbents for water purification is of great demand to control water pollution and to provide sustainable water resources. Herein, for the first time, we reported the fabrication of Kevlar nanofiber (KNF) based composite particles for water purification. Both the KNF and KNF-carbon nanotube composite particles can be produced in large-scale by automatic injection of casting solution into ethanol. The resulted nanofibrous particles showed high adsorption capacities towards various pollutants, including metal ions, phenylic compounds and various dyes. Meanwhile, the adsorption process towards dyes was found to fit well with the pseudo-second-order model, while the adsorption speed was controlled by intraparticle diffusion. Furthermore, the adsorption capacities of the nanofibrous particles could be easily recovered by washing with ethanol. In general, the KNF based particles integrate the advantages of easy production, robust and effective adsorption performances, as well as good recyclability, which can be used as robust absorbents to remove toxic molecules and forward the application of absorbents in water purification.
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China.
authors.forename: Chuanxiong
authors.initials: C
authors.lastname: Nie
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China.
authors.forename: Zihang
authors.initials: Z
authors.lastname: Peng
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China; Department of Chemistry and Biochemistry, Freie Universitat Berlin, Takustr. 3, 14195 Berlin, Germany. Electronic address: sagecheng@163.com.
authors.forename: Chong
authors.initials: C
authors.lastname: Cheng
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China.
authors.forename: Lang
authors.initials: L
authors.lastname: Ma
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, PR China. Electronic address: zhaochsh70@163.com.
authors.forename: Changsheng
authors.initials: C
authors.lastname: Zhao
keywords: Kevlar nanofiber/CNT composite; Kevlar-based porous particle; Robust and recyclable absorbent; Toxic molecules; Water treatment