Polyacrylonitrile/polyaniline core/shell nanofiber mat for removal of hexavalent chromium from aqueous solution: mechanism and applications

Handle URI:
http://hdl.handle.net/10754/599211
Title:
Polyacrylonitrile/polyaniline core/shell nanofiber mat for removal of hexavalent chromium from aqueous solution: mechanism and applications
Authors:
Wang, Jianqiang; Pan, Kai; Giannelis, Emmanuel P.; Cao, Bing
Abstract:
Polyacrylonitrile/polyaniline core/shell nanofibers were prepared via electrospinning followed by in situ polymerization of aniline. Nanofibers with different morphology were obtained by changing the polymerization temperature. When used as absorbent for Cr(vi) ions, the core/shell nanofiber mats exhibit excellent adsorption capability. The equilibrium capacity is 24.96, 37.24, and 52.00 mg g-1 for 105, 156, and 207 mg L-1 initial Cr(vi) solution, respectively, and the adsorption capacity increases with temperature. The adsorption follows a pseudo second order kinetics model and is best fit using the Langmuir isotherm model. The mats show excellent selectivity towards Cr(vi) ions in the presence of competing ions albeit a small decrease in adsorption is observed. The mats can be regenerated and reused after treatment with NaOH making them promising candidates as practical adsorbents for Cr(vi) removal. © The Royal Society of Chemistry 2013.
Citation:
Wang J, Pan K, Giannelis EP, Cao B (2013) Polyacrylonitrile/polyaniline core/shell nanofiber mat for removal of hexavalent chromium from aqueous solution: mechanism and applications. RSC Adv 3: 8978. Available: http://dx.doi.org/10.1039/c3ra40616d.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
RSC Advances
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
2013
DOI:
10.1039/c3ra40616d
Type:
Article
ISSN:
2046-2069
Sponsors:
This work is supported by the National Natural Science Foundation of China (5114304), the Central University of basic scientific research project of BUCT (ZZ1112) and the award by King Abdullah University of Science and Technology (KAUST) (KUS-C1-018-02).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Jianqiangen
dc.contributor.authorPan, Kaien
dc.contributor.authorGiannelis, Emmanuel P.en
dc.contributor.authorCao, Bingen
dc.date.accessioned2016-02-25T13:55:00Zen
dc.date.available2016-02-25T13:55:00Zen
dc.date.issued2013en
dc.identifier.citationWang J, Pan K, Giannelis EP, Cao B (2013) Polyacrylonitrile/polyaniline core/shell nanofiber mat for removal of hexavalent chromium from aqueous solution: mechanism and applications. RSC Adv 3: 8978. Available: http://dx.doi.org/10.1039/c3ra40616d.en
dc.identifier.issn2046-2069en
dc.identifier.doi10.1039/c3ra40616den
dc.identifier.urihttp://hdl.handle.net/10754/599211en
dc.description.abstractPolyacrylonitrile/polyaniline core/shell nanofibers were prepared via electrospinning followed by in situ polymerization of aniline. Nanofibers with different morphology were obtained by changing the polymerization temperature. When used as absorbent for Cr(vi) ions, the core/shell nanofiber mats exhibit excellent adsorption capability. The equilibrium capacity is 24.96, 37.24, and 52.00 mg g-1 for 105, 156, and 207 mg L-1 initial Cr(vi) solution, respectively, and the adsorption capacity increases with temperature. The adsorption follows a pseudo second order kinetics model and is best fit using the Langmuir isotherm model. The mats show excellent selectivity towards Cr(vi) ions in the presence of competing ions albeit a small decrease in adsorption is observed. The mats can be regenerated and reused after treatment with NaOH making them promising candidates as practical adsorbents for Cr(vi) removal. © The Royal Society of Chemistry 2013.en
dc.description.sponsorshipThis work is supported by the National Natural Science Foundation of China (5114304), the Central University of basic scientific research project of BUCT (ZZ1112) and the award by King Abdullah University of Science and Technology (KAUST) (KUS-C1-018-02).en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titlePolyacrylonitrile/polyaniline core/shell nanofiber mat for removal of hexavalent chromium from aqueous solution: mechanism and applicationsen
dc.typeArticleen
dc.identifier.journalRSC Advancesen
dc.contributor.institutionBeijing University of Chemical Technology, Beijing, Chinaen
dc.contributor.institutionCornell University, Ithaca, United Statesen
dc.contributor.institutionKing Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabiaen
kaust.grant.numberKUS-C1-018-02en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.