Journal
NANOSCALE
Volume 3, Issue 10, Pages 4270-4274Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr10506j
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Funding
- National Natural Science Foundation (NSFC) [21071137]
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The application of Prussian blue analogue (PBA) Mn-3[Co(CN)(6)](2)center dot nH(2)O porous nanocubes as absorbents for heavy metal ions has been demonstrated. The result indicates that Mn-3[Co(CN)(6)](2)center dot nH(2)O porous nanocubes with average diameter of 240 nm possess excellent adsorption efficiency for Pb2+ ions (94.21% at initial Pb2+ concentration of 10 mg L-1). Moreover, Mn-3[Co(CN)(6)](2)center dot nH(2)O porous nanocubes can also show high adsorption efficiency on heavy metal ions even in a strong acidic solution due to its chemical stability. Notably, an external magnet could be used to accelerate the separation of Mn-3[Co(CN)(6)](2)center dot nH(2)O from the treated solution. It is suggested that the high adsorption efficiency may derive from the large surface area, M-3(II)[M-III(CN)(6)](2)center dot nH(2)O porous framework structure and affinity between polarizable pi-electron clouds of the cyanide bridges and heavy metals ions.
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