1. The Uncommon Channel-Based Ln-MOFs for Highly Selective Fe3+ Detection and Superior Rhodamine B Adsorption.
- Author
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Xing, Shanghua, Bing, Qiming, Song, Lifei, Li, Guanghua, Liu, Jingyao, Shi, Zhan, Feng, Shouhua, and Xu, Ruren
- Subjects
LUMINESCENT probes ,MOLECULAR probes ,ADSORPTION capacity ,SURFACE chemistry ,AQUEOUS solutions - Abstract
Two new isostructural 3D lanthanide-organic frameworks [H
2 N(Me)2 ] [Ln3 (OH)(bpt)3 (H2 O)3 ] (DMF)2 ⋅(H2 O)4 ( 1-Ln; Ln=Sm and Eu) with a 1D channel (25 Å) have been successfully assembled from the rare trinuclear [Ln3 (OH)(COO)9 ] clusters and biphenyl-3,4′,5-tricarboxylic acid (H3 bpt) and exhibit high stability towards water in the pH range 3-10. MOF 1-Eu is a promising luminescent probe for sensing Fe3+ in aqueous solution and is also selective towards rhodamine B (RhB) with a superior adsorption capacity of 735 mg g−1 , 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. [ABSTRACT FROM AUTHOR]- Published
- 2016
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