Publication | Closed Access
The Uncommon Channel‐Based Ln‐MOFs for Highly Selective Fe<sup>3+</sup> Detection and Superior Rhodamine B Adsorption
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Citations
53
References
2016
Year
Two new isostructural 3D lanthanide-organic frameworks [H<sub>2</sub> N(Me)<sub>2</sub> ] [Ln<sub>3</sub> (OH)(bpt)<sub>3</sub> (H<sub>2</sub> O)<sub>3</sub> ] (DMF)<sub>2</sub> ⋅(H<sub>2</sub> O)<sub>4</sub> (1-Ln; Ln=Sm and Eu) with a 1D channel (25 Å) have been successfully assembled from the rare trinuclear [Ln<sub>3</sub> (OH)(COO)<sub>9</sub> ] clusters and biphenyl-3,4',5-tricarboxylic acid (H<sub>3</sub> bpt) and exhibit high stability towards water in the pH range 3-10. MOF 1-Eu is a promising luminescent probe for sensing Fe<sup>3+</sup> in aqueous solution and is also selective towards rhodamine B (RhB) with a superior adsorption capacity of 735 mg g<sup>-1</sup> , which is the highest among the reported Ln-MOFs for RhB removal so far. Periodic DFT calculations further confirmed the selective adsorption of rhodamine B over other dyes.
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