Issue 10, 2011

Magnetically separable Prussian blue analogue Mn3[Co(CN)6]2·nH2O porous nanocubes as excellent absorbents for heavy metal ions

Abstract

The application of Prussian blue analogue (PBA) Mn3[Co(CN)6]2·nH2O porous nanocubes as absorbents for heavy metal ions has been demonstrated. The result indicates that Mn3[Co(CN)6]2·nH2O 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, Mn3[Co(CN)6]2·nH2O 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 Mn3[Co(CN)6]2·nH2O from the treated solution. It is suggested that the high adsorption efficiency may derive from the large surface area, M3II[MIII(CN)6]2·nH2O porous framework structure and affinity between polarizable π-electron clouds of the cyanide bridges and heavy metals ions.

Graphical abstract: Magnetically separable Prussian blue analogue Mn3[Co(CN)6]2·nH2O porous nanocubes as excellent absorbents for heavy metal ions

Supplementary files

Article information

Article type
Paper
Submitted
18 May 2011
Accepted
02 Aug 2011
First published
24 Aug 2011

Nanoscale, 2011,3, 4270-4274

Magnetically separable Prussian blue analogue Mn3[Co(CN)6]2·nH2O porous nanocubes as excellent absorbents for heavy metal ions

L. Hu, J. Mei, Q. Chen, P. Zhang and N. Yan, Nanoscale, 2011, 3, 4270 DOI: 10.1039/C1NR10506J

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