Bimetallic CPM-37(Ni,Fe) metal-organic framework: enhanced porosity, stability and tunable composition.

A newly synthesized series of bimetallic CPM-37(Ni,Fe) metal-organic frameworks with different iron content (Ni/Fe ≈ 2, 1, 0.5, named CPM-37(NiFe), CPM-37(NiFe) and CPM-37(NiFe)) demonstrated high N-based specific surface areas of 2039, 1955, and 2378 m g for CPM-37(NiFe), CPM-37(NiFe), and CPM-37(NiFe), having much higher values compared to the monometallic CPM-37(Ni) and CPM-37(Fe) with 87 and 368 m g only. It is rationalized that the mixed-metal nature of the materials increases the structural robustness due to the better charge balance at the coordination bonded cluster, which opens interesting application-oriented possibilities for mixed-metal CPM-37 and other less-stable MOFs.

Inverse Adsorption Separation of N O/CO in AgZK-5 Zeolite.

Nitrous oxide (N O), as the third largest greenhouse gas in the world, also has great applications in daily life and industrial production, like anesthetic, foaming agent, combustion supporting agent, N or O atomic donor. The capture of N O in adipic acid tail gas is of great significance but remains challenging due to the similarity with CO in molecular size and physical properties. Herein, the influence of cation types on CO -N O separation in zeolite was studied comprehensively.

Exceptionally Stable And Super-Efficient Electrocatalysts Derived From Semiconducting Metal Phosphonate Frameworks.

Two new isostructural semiconducting metal-phosphonate frameworks are reported. Co [1,4-NDPA] and Zn [1,4-NDPA] (1,4-NDPA is 1,4-naphthalenediphosphonate) have optical bandgaps of 1.7 eV and 2.

Capture and Separation of SO Traces in Metal-Organic Frameworks via Pre-Synthetic Pore Environment Tailoring by Methyl Groups.

Herein, we report a pre-synthetic pore environment design strategy to achieve stable methyl-functionalized metal-organic frameworks (MOFs) for preferential SO binding and thus enhanced low (partial) pressure SO adsorption and SO /CO separation. The enhanced sorption performance is for the first time attributed to an optimal pore size by increasing methyl group densities at the benzenedicarboxylate linker in [Ni (BDC-X) DABCO] (BDC-X=mono-, di-, and tetramethyl-1,4-benzenedicarboxylate/terephthalate; DABCO=1,4-diazabicyclo[2,2,2]octane). Monte Carlo simulations and first-principles density functional theory (DFT) calculations demonstrate the key role of methyl groups within the pore surface on the preferential SO affinity over the parent MOF.