Change search
ReferencesLink to record
Permanent link

Direct link
Surface functionalized nanofibers for the removal of chromium(VI) from aqueous solutions
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Show others and affiliations
2014 (English)In: Chemical Engineering Journal, ISSN 1385-8947, Vol. 245, 201-209 p.Article in journal (Refereed) Published
Abstract [en]

Polyacrylonitrile (PAN) nanofibers functionalized with amine groups (PAN-NH2) were prepared using a simple one-step reaction route. The PAN-NH2 nanofibers were investigated for the removal of chromium(VI) from aqueous solutions. The adsorption and the kinetic characteristics were evaluated in batch process. The adsorption process showed pH dependence and the maximum Cr(VI) adsorption occurred at pH = 2. The Langmuir adsorption model described well the experimental adsorption data and estimated a maximum loading capacity of 156 mg/g, which is a markedly high value compared to other adsorbents reported. The kinetics studies indicated that the equilibrium was attained after 90 min and the experimental data followed a pseudo-second order model suggesting a chemisorption process as the rate limiting step. X-ray Photoelectron Spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) revealed that the adsorption of Cr(VI) species on PAN-NH2 was facilitated through both electrostatic attraction and surface complexation. High desorption efficiency (> 90%) of Cr(VI) was achieved using diluted base solutions that may allow the reuse of PAN-NH2 nanofibers.

Place, publisher, year, edition, pages
2014. Vol. 245, 201-209 p.
Keyword [en]
Nanofibers, Polyacrylonitrile, Adsorption, Chromium
National Category
Materials Chemistry
URN: urn:nbn:se:su:diva-104388DOI: 10.1016/j.cej.2014.02.034ISI: 000335275200025OAI: diva2:724132


Available from: 2014-06-12 Created: 2014-06-10 Last updated: 2014-06-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Akhtar, Farid
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Chemical Engineering Journal
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 70 hits
ReferencesLink to record
Permanent link

Direct link