期刊
DALTON TRANSACTIONS
卷 49, 期 42, 页码 14854-14862出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt03176c
关键词
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资金
- NSF of China [21971143, 21673127]
- Opening Project of Key Laboratory of Polyoxometalate Science of Ministry of Education
- 111 Project of Hubei Province [D00015]
Designing novel multifunctional rare-earth metal-organic frameworks (MOFs) has attracted intensive attention. In particular, employing such materials for sensing or catalytic reactions is still very challenging. Here, a new 3D porous Eu(III)-MOF, [Eu(cppa)(OH)]center dot xS (denoted as CTGU-19, S = solvent molecule, CTGU = China Three Gorges University), was synthesized by using 5-(4-carboxyphenyl)picolinic acid (H(2)cppa) as an organic ligand, and it shows a 3D (3,12)-connected topological net with the point symbol (4(20)center dot 6(28)center dot 8(18))(4(3))(4), constructed from cubane-shaped tetranuclear europium building units. Interestingly, CTGU-19 can be used as a highly sensitive luminescent sensor to identify ornidazole (ODZ) and nitrofurantoin (NFT) at different excitation wavelengths. This result represents the first example of a lanthanide-metal-organic-framework (Eu-MOF) that can be employed as a discriminating fluorescent probe to recognize ODZ and NFT at different excitation wavelengths. Furthermore, after loading CTGU-19 with Ag and/or Au nanoparticles, the composites exhibit efficient catalytic performance for reducing 2-/3-/4-nitrophenols (2-/3-/4-NP), in which the unit mass reduction rate constants of Ag0.8Au0.2@CTGU-19 for 2-NP, 3-NP, and 4-NP reach 68.8, 53.80, and 52.34 s(-1) g(-1), respectively.
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