期刊
RSC ADVANCES
卷 9, 期 2, 页码 1106-1114出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra09386e
关键词
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资金
- UK-Korea Joint Research Program through NRF [NRF-2015M2A7A1000219]
- Advanced Biomass R&D Center as the Global Frontier Project - Ministry of Science, ICT and Future Planning, South Korea [ABC-2010-0029728]
- Engineering and Physical Sciences Research Council [EP/M026426/1]
- EPSRC [EP/M026426/1, EP/S032797/1] Funding Source: UKRI
Potassium copper hexacyanoferrate (KCuHCF)-incorporated magnetic chitosan beads (HMC) were synthesized for both selective Cs+ removal in aqueous solutions and facile recovery of the spent adsorbent. To disperse and immobilize large amounts of the KCuHCF, methyl acrylate and diethylenetriamine were sequentially grafted onto the one-step synthesized magnetic chitosan beads. The additional introduction of amino functionality led to the enriched Cu2+ ions on the bead surface to incorporate KCuHCF into the grafting matrix. Consequently, the HMC exhibited a high Cs+ capacity calculated to be 136.47 mg g(-1) from the Langmuir model, and the equilibrium was established within 4 h. Moreover, the HMC exhibited excellent stability in a wide pH range from 4 to 11 and an outstanding Cs+ selectivity (>97%) in seawater (1.11 mg L-1 Cs+). From a practical point of view, the HMC was stable during five successive adsorption cycles and easily recovered by magnets, enabling continuous operation to decontaminate a large volume of wastewater.
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