Diglycolamide functionalized multi-walled carbon nanotubes for removal of uranium from aqueous solution by adsorption

Diglycolamide functionalized multi-walled carbon nanotubes (DGA-MWCNTs) were synthesized by sequential chemical reactions for removal of uranium from aqueous solution. Characterization studies were carried out using FT-IR spectroscopy, XRD and SEM analysis. Adsorption of uranium from aqueous solutio...

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Published in:Journal of radioanalytical and nuclear chemistry 2012-03, Vol.291 (3), p.877-883
Main Authors: Deb, Ashish Kumar Singha, Ilaiyaraja, P., Ponraju, D., Venkatraman, B.
Format: Article
Language:English
Subjects:
Adsorption
Chemical properties
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nanotubes
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Uranium
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container_title Journal of radioanalytical and nuclear chemistry
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creator Deb, Ashish Kumar Singha
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Venkatraman, B.
description Diglycolamide functionalized multi-walled carbon nanotubes (DGA-MWCNTs) were synthesized by sequential chemical reactions for removal of uranium from aqueous solution. Characterization studies were carried out using FT-IR spectroscopy, XRD and SEM analysis. Adsorption of uranium from aqueous solution on this material was studied as a function of nitric acid concentration, adsorbent dose and initial uranium concentration. The uranium adsorption data on DGA-MWCNTs followed the Langmuir and Freundlich adsorption isotherms. The adsorption capacity of DGA-MWCNTs as well as adsorption isotherms and the effect of temperature on uranium ion adsorption were investigated. The standard enthalpy, entropy, and free energy of adsorption of the uranium with DGA-MWCNTs were calculated to be 6.09 kJ mole −1 , 0.106 kJ mole −1 K −1 and −25.51 kJ mole −1 respectively at 298K. The results suggest that DGA-MWCNTs can be used as efficient adsorbent for uranium ion removal.
doi_str_mv 10.1007/s10967-011-1366-6
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subjects Adsorption
Chemical properties
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nanotubes
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Uranium
title Diglycolamide functionalized multi-walled carbon nanotubes for removal of uranium from aqueous solution by adsorption
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