Synthesis and Characterization of 2D Metal-Organic Frameworks for Adsorption of Carbon Dioxide and Hydrogen

Abstract

The reaction of Cd(NO 3) 2 •4H 2 O and Zn(NO 3) 2 •6H 2 O with the bipyridyl dicarboxylate ligand H 2 bpydc (2,2 ′-bipyridine-4,4 ′-dicarboxylic acid) afforded two porous metal organic frameworks [Cd(bpydc) 2 (DMF) 2 •2DMF] n (JMS-3) and [Zn(bpydc)(DMF)•DMF] n (JMS-4). X-ray diffraction studies revealed that both JMS-3 and JMS-4 crystallize in the monoclinic crystal. The MOFs possess 2D interdigited networks with (sql) topology. Sorption studies showed that the activated phase of JMS-3 had CO 2 volumetric uptakes of 26.50 and 30.89 cm 3 (STP) g −1 (1.18 and 1.39 mmol g −1) whist JMS-4 gave 10.96 and 16.08 cm 3 (STP) g −1 (0.49 and 0.71 mmol g −1) at 298 and 273 K respectively.

Tuning the topology of a 2D metal–organic framework from 2D to 3D using modulator assisted synthesis

“…In our effort do design and synthesize new MOFs that can be used for carbon dioxide capture and conversion, 23 two novel MOFs of [La(bpdc) 3/2 (dmf) 2 ]·(dmf)(H 2 O), MSU-10 and [La(bpdc) 3/2 (H 2 O) 2 (dmf)]·dmf, MSU-11 were synthesized. The use of a modulator, 1,10-phenathroline yielded a 3D MOF, (MSU-11), with a very rare zbj topology while the 2D network MSU-10 was formed without modulator.…”

“…As part of our ongoing work to design new MOFs which can be used as support materials in catalysis, 22,23 herein, we report on the synthesis and characterization of two novel metal–organic frameworks based on lanthanum( iii ) and the 2,2′-bipyridine-4,4′-dicarboxylate linker.…”

“…21 Different types of metal SBUs have been observed in MOFs, enabling a classification into dot-MOFs, rod-MOFs, sheet-MOFs and MOFs with 3D metal SBUs as most ZIFs. 10 As part of our ongoing work to design new MOFs which can be used as support materials in catalysis, 22,23 herein, we report on the synthesis and characterization of two novel metal-organic frameworks based on lanthanum(III) and the 2,2′-bipyridine-4,4′-dicarboxylate linker.…”