Abstract
Amino-functionalized multi-walled carbon nanotubes (MWCNTs) were synthesized by a simple, cost-effective method using 3-aminopropyltriethoxysilane and were evaluated for cesium ion removal in aqueous solution. Experimental results showed that the maximum cesium adsorption capacity of amino-functionalized MWCNTs was 136.3 mg g−1, reaching 95% of the ultimate adsorption capacity within 30 min. The adsorption capacity of amino-functionalized MWCNTs was not significantly affected by the presence of competing ions. The Langmuir isotherm fitted the experimental data well and a thermodynamic study indicated the spontaneous and endothermic nature of cesium adsorption on the amino-functionalized MWCNTs.
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This study was also supported by grants (NRF-2016R1A2B4010431) through the Ministry of Education and National Research Foundation (NRF) of Korea. This research was also supported by an NRF grant from the Korean government (NRF-2015M2A7A1000194).
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Jang, J., Miran, W. & Lee, D.S. Amino-functionalized multi-walled carbon nanotubes for removal of cesium from aqueous solution. J Radioanal Nucl Chem 316, 691–701 (2018). https://doi.org/10.1007/s10967-018-5812-6
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DOI: https://doi.org/10.1007/s10967-018-5812-6