A Polyhedron‐based Metal‐Organic Framework showing high CO₂ Adsorption Capacity

Abstract

A novel porous copper‐based metal‐organic framework {[Cu2(TTDA)2]*(DMA)7}n (1) (DMA = N,N‐dimethylacetamide) was designed and synthesized via the combination of a dual‐functional organic linker 5′‐(4‐(4H‐1,2,4‐triazol‐4‐yl)phenyl)‐[1,1′:3′,1′′‐terphenyl]‐4,4′′‐dicarboxylic acid (H2TTDA) and a dinuclear CuII paddle‐wheel cluster. This MOF is characterized by elemental analysis, powder X‐ray diffraction (PXRD), thermo gravimetric analysis (TGA), and single‐crystal X‐ray diffraction. The framework is constructed from two types of cages (octahedral and cuboctahedral cages) and exhibits two types of circular‐shaped channels of approximate size of 5.8 and 11.4 Å along the crystallographic c axis. The gas sorption experiments indicate that it possesses a large surface area (1687 m2·g–1) and high CO2 adsorption capacities around room temperature (up to 172 cm3·g–1 at 273 K and 124 cm3·g–1 at 298 K).

Ag‐Enhanced TiO2–x/C Composites with Metal‐Organic Frameworks as Precursors for Photodegradation of Methyl Blue

“…It is a class of crystalline materials built from organic binding ligands and metal ions through self‐assembly . MOFs possess large specific surface areas, high porosity, and diversity of structures and functions, thus many potential applications have been proposed in the domains of gas adsorption and separation, sensors, drug delivery, catalysis, and others . In particular, photoactive MOFs behaving as semiconductors have been used to eliminate the contamination of organic pollutants …”