Preparation of polyaniline-coated polyacrylonitrile fiber mats and their application to Cr(VI) removal

被引：40

作者：

Ren, Jianyu ^{[1
]}

Huang, Xiongyi ^{[2
]}

Wang, Ning ^{[1
]}

Lu, Kezhen ^{[1
]}

Zhang, Xingxiang ^{[1
]}

Li, Wei ^{[1
]}

Liu, Dongqin ^{[3
]}

机构：

[1] Tianjin Polytech Univ, Tianjin Municipal Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[3] Xinxiang Bailu Investment Grp Co Ltd, Xinxiang 453011, Henan, Peoples R China

来源：

SYNTHETIC METALS | 2016年 / 222卷

基金：

中国国家自然科学基金;

关键词：

Polyaniline; Polyacrylonitrile; Nanofiber mat; Solution blowing; Hexavalent chromium; HEXAVALENT CHROMIUM REMOVAL; INTRINSIC REDOX STATES; WASTE-WATER; AQUEOUS-SOLUTIONS; JUTE FIBER; ADSORPTION; NANOFIBERS; CARBON; POLYMERIZATION; MORPHOLOGY;

D O I：

10.1016/j.synthmet.2016.10.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A composite nanofibers mat containing polyacrylonitrile (PAN) as core and polyaniline (PANI) as sheath had been successfully prepared via solution spinning followed by in situ polymerization, and its hexavalent chromium (Cr(VI)) removal potential was investigated. By altering the processing parameters, bead-free and uniform PAN nanofibers with average diameter of 469 nm could be obtained. The morphological evolution of the PANI/PAN composite fiber mats could be controlled through regulating the molar ratio of oxidant to monomer. The PANI/PAN composite fiber mats presented a superior Cr(VI) adsorption performance. Moreover, the factors affecting the performance of Cr(VI) removal from the aqueous solutions were investigated systematically. The experimental data were fitted to various kinetic models and isothermal adsorption, and the thermodynamic parameters of adsorption process were calculated as well. The PANI/PAN adsorbents were also proven to have good recycling capability, and the mechanism of adsorption and regeneration was investigated in detail. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：255 / 266

页数：12

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