Recent advances in the application of zeolitic imidazolate frameworks (ZIFs) in environmental remediation: a review

Abstract

As one of porous metal-organic frameworks, zeolitic imidazolate frameworks (ZIFs) are typical crystalline materials with tetrahedral clusters (e.g., ZnN4 and CoN4) linked by imidazolate ligands. Due to the facile synthesis,...

Intrusion of Water in ZIF-8: Evidence of the Thermodynamic Instability under High Pressure

“…, Zn 2+ , Co 2+ , Cd 2+ ···) connected in an extended crystalline network by imidazolate-type linkers . They have zeolite-related frameworks with various topologies due to the metal–linker–metal angle close to 145°, which is similar to the Si–O–Si angle in zeolites. , ZIFs have remarkably high pore volume and tunable surface properties that make them very interesting and promising materials for various applications such as gas storage, − liquid phase adsorption, − separation, ,, sensors, and heterogeneous catalysis . Owing to the concept of reticular chemistry offered by MOF-type materials, it is possible to modulate the chemical composition of materials’ frameworks (including their hydrophobic feature) while adapting their pore size and porous volume (toward a low aperture size and large volume, respectively, for the targeted application).…”

Sustainable porous carbons from tannic acid based KOH activated as high-performance CO2 capture sorbents

“…Micropores, in particular those with #1 nm diameter (classied as narrow micropores), are involved in the adsorption of CO 2 at low pressure (#1 bar), [10][11][12][13] whereas at high pressure (e.g., 30 bar) small mesopores ranging in size from 2-4 nm have a key role in CO 2 uptake. [14][15][16] Therefore, porous materials with controlled pore size properties, such as metal-organic frameworks (MOFs), 17,18 microporous polymers, 19,20 and zeolites, 21,22 are of signicant use for CO 2 capture and are a subject of extensive research. Nevertheless, the practicality of those techniques is constrained by high manufacturing costs, nonrenewable materials, and challenging synthesis procedures.…”

Cobalt-Doped ZIF-8 Nanoparticle-Decorated Fiber Optic Sensor for Copper Ion Detection

“…28 Metal ion doping has been reported to further increase the adsorption efficiency of the ZIF-8. 29 Among several metals, including copper, nickel, and silver, cobalt allows room-temperature-based synthesis of a doped-MOF, 30−32 which helps in easier integration of the MOF with a sensitive sensor to achieve a high sensitivity for Cu(II) ion detection. Thus, toward realizing a portable diptype optical sensor, cobalt doped ZIF-8 (Co/ZIF-8) could be an excellent candidate for selective Cu(II) ion detection mainly due to (i) its improved adsorption to the sensor surface, (ii) facile room-temperature-based in situ deposition route, (iii) its superior stability in aqueous media, and (iv) the availability of a characteristic absorption peak in the visible region.…”