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Highly stable 3D porous HMOF with enhanced catalysis and fine color regulation by the combination of d- and p-ions when compared with those of its monometallic MOFs. | LitMetric

Highly stable 3D porous HMOF with enhanced catalysis and fine color regulation by the combination of d- and p-ions when compared with those of its monometallic MOFs.

Chem Commun (Camb)

Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China.

Published: August 2020

AI Article Synopsis

  • - Two new monometallic organic frameworks (MOFs), {[ZnL(NMP)(HO)]·HO} (1) and {[PbL(HO)]·HO} (2), were created using a unique ligand derived from 2-(1H-tetrazol-5-yl)terephthalic acid.
  • - A new porous heterometallic organic framework (HMOF), {[PbZnL(HO)]·0.5NMP·HO} (3), was synthesized by combining lead and zinc ions, featuring 28.9% porosity and 1D open channels with Lewis basic and acidic sites.
  • - HMOF 3 demonstrated exceptional resistance to boiling water

Article Abstract

In this study, two new monometallic organic frameworks (MOFs), namely {[ZnL(NMP)(HO)]·HO} (1) and {[PbL(HO)]·HO} (2), were synthesized for the first time by a new bifunctional N,O-containing 2-(1H-tetrazol-5-yl)terephthalic acid (HL) ligand. Then, based on the HSAB principle, another porous Pb-Zn heterometallic organic framework (HMOF), namely {[PbZnL(HO)]·0.5NMP·HO} (3), was successfully obtained for the first time by combining Pb(ii) and Zn(ii) ions with HL. The MOFs 1 and 2 are 3D densely packed frameworks, whereas the HMOF 3 is a porous 3D framework (28.9% porosity) with 1D open channels modified by Lewis basic sites (exposed N atoms) and Lewis acidic sites (unsaturated bimetallic sites). The HMOF 3 has a strong boiling water/acid-base resistance (pH = 2-12) and shows an enhanced high-efficiency catalytic effect for CO conversion (98%) under ambient temperature and pressure conditions. In addition, fine color regulations of the MOFs were successfully realized by doping different kinds of metal ions into them. This study aims to provide a new way and field of vision for the construction of HMOFs and their multi-functional materials.

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Source
http://dx.doi.org/10.1039/d0cc03111aDOI Listing

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