Abstract
Multiwalled carbon nanotubes (MWCNTs) were modified by strong oxidizing agents and were functionalized with toluene 2,4-diisocyanate, and they were used for selective separation of Tl-201 from Pb-201 (radioactive lead). The pristine and functionalized MWCNTs were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The optimal conditions of experiment, such as pH, amount of adsorbent, and contact time were investigated. The adsorption capacity was evaluated using both Langmuir and Freundlich adsorption isotherm models. The results showed that functionalized MWCNTs have a greater potential for adsorption of lead from aqueous solution, nuclear sample, and separation of Tl-201 from Pb-201.
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The authors thank the Ehsan Maadi and Sedigheh Moradkhani for carrying out Polarography and HPGe studies.
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Ouni, L., Mirzaei, M., Ashtari, P. et al. Isocyanate functionalized multiwalled carbon nanotubes for separation of lead from cyclotron production of thallium-201. J Radioanal Nucl Chem 310, 633–643 (2016). https://doi.org/10.1007/s10967-016-4928-9
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DOI: https://doi.org/10.1007/s10967-016-4928-9