Synthesis of novel poly(amidoxime) grafted multiwall carbon nanotube gel and uranium adsorption

This is the first report on the synthesis of a new functional nanocomposite gel containing amidoxime functionalized multiwall carbon nanotube (AO-MWNT-FNC GEL). The surface morphology of AO-MWNT-FNC GEL was investigated by field emission scanning electron microscopy. The modification of gel with ami...

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Bibliographic Details
Published inJournal of nanoscience and nanotechnology Vol. 14; no. 3; p. 2451
Main Authors Gopalan, A, Philips, M Francklin, Jeong, Jae-Hong, Lee, Kwang-Pill
Format Journal Article
LanguageEnglish
Published United States 01.03.2014
Subjects
Adsorption
Amines - chemistry
Carbon - chemistry
Gels
Hydrogen-Ion Concentration
Ions
Microscopy, Electron, Scanning
Nanocomposites - chemistry
Nanotubes, Carbon - chemistry
Photoelectron Spectroscopy
Piperidines - chemistry
Polymers - chemistry
Spectrophotometry, Ultraviolet
Spectroscopy, Fourier Transform Infrared
Uranium - analysis
Water - chemistry
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Summary:This is the first report on the synthesis of a new functional nanocomposite gel containing amidoxime functionalized multiwall carbon nanotube (AO-MWNT-FNC GEL). The surface morphology of AO-MWNT-FNC GEL was investigated by field emission scanning electron microscopy. The modification of gel with amidoxine groups was confirmed by Fourier transform infra red spectroscopy. The AO-MWNT-FNC GEL provides effective binding with uranium ions as was ascertained by X-ray photoelectron spectroscopy. The AO-MWNT-FNC GEL was utilized as the new adsorbent for the recovery of uranium ions from aqueous solution. UV-visible spectroscopy was used to monitor the adsorption capacity of the AO-MWNT-FNC GEL toward uranium ions. The influence of initial uranium ion concentration and solution pH on the adsorption capacity of the AO-MWNT-FNC GEL were studied in batch experiments. The new FNC-GEL designed in this study is distinguished by higher adsorption capacity for uranium ions due to the synergistic contributions from high surface area of MWNT and the functional AO groups in FNC-GEL and exhibits potential for efficient recovery of uranium ions.
ISSN:1533-4880
1533-4899
DOI:10.1166/jnn.2014.8507