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Journal of Polymer Research

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01-04-2016 | Original Paper

Polyaniline/akaganéite nanocomposite for detoxification of noxious Cr(VI) from aquatic environment

Authors: Shaker Ebrahim, Azza Shokry, Hesham Ibrahim, Moataz Soliman

Published in: Journal of Polymer Research | Issue 4/2016

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Abstract

In this work, a removal of toxic hexavalent chromium Cr(VI) ion from aqueous solution was investigated and studied using nanocomposite of polyaniline (PANI) and akaganéite nanoparticles (NP). HCl doped PANI, and akaganéite NPs were prepared by chemical oxidative polymerization and co-precipitation techniques, respectively. The synthesized materials were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), and high-resolution transmission electron microscope (HRTEM). It was indicated that the formed oxide NPs were consisted of akaganéite as dominant phase plus minor phases of hematite, magnetite, and/or maghemite. HRTEM images of the prepared nanocomposite demonstrated that the phases of oxide NPs embedded in the nanocomposite had the same crystallinity and morphology of pristine oxide NPs. It was found that size of nanocomposite particles has diameter ranged from 8.95 to 16.21 nm. Cr(VI) removals in a wide pH range from 2 to 9 were appropriated for prepared nanocomposite. The nanocomposite has demonstrated high removal percentage of 99.2 % and removal capacity of 17.36 mg/g for 7.0 mg/L Cr(VI) polluted aqueous solution at pH 2.0 for 5-min contact time. The synthesized nanocomposite was applied to remove Cr(VI) from a leather tanning wastewater sample with efficiency of 93.4 %.

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Title: Polyaniline/akaganéite nanocomposite for detoxification of noxious Cr(VI) from aquatic environment
Authors: Shaker Ebrahim
Azza Shokry
Hesham Ibrahim
Moataz Soliman
Publication date: 01-04-2016
Publisher: Springer Netherlands
Published in: Journal of Polymer Research / Issue 4/2016
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI: https://doi.org/10.1007/s10965-016-0977-6

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