Facile and high-yield synthesis of improved MIL-101(Cr) metal-organic framework with exceptional CO2 and H2S uptake; the impact of excess ligand-cluster

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

“…The defect-induced active sites in MOFs, together with their high porosity make these materials promising in the eld of decontamination. The decontamination of chemical warfare agents (CWAs) 24,[133][134][135] and the adsorption of pollutants (e.g., organoarsenic compounds 11,136 and dyes 137,138 and gas pollutants 6,7,31,83,97,139,140 ) have been widely investigated with the use of defective MOFs. Recently, zirconium-based MOFs (Zr-MOFs) with open metal sites and excellent stability have not only shown efficient uptake of CWAs but also enhanced the chemical detoxication of organophosphorus-based CWAs in a hydrolysis reaction.…”

“…Defective MOFs have also been used as adsorbents for the adsorption of gaseous pollutants such as H 2 S, SO 2 , and volatile organic compounds (e.g., benzene). 7,8,31,41,97,140 The deliberate creation of defects in MOFs signicantly enhances the gas adsorption capacity (e.g., SO 2 ) due to the enhanced pore accessibility and the specic interactions between sulfur dioxide molecules and defect sites. 8 The dependence of H 2 S absorption on the density of the defects in HKUST-1 and MIL-101 has been systematically investigated.…”

“…8 The dependence of H 2 S absorption on the density of the defects in HKUST-1 and MIL-101 has been systematically investigated. 7,31 Recently, defective UiO-66 prepared using a simple solvothermal method with structure-directing agents (e.g., P123, 97 polyvinylpyrrolidone, 139 and cetyltrimethylammonium bromide (CTAB) 83 ) showed excellent toluene adsorption performance. As shown in Fig.…”

Current Progress and Future Directions in Gas‐Phase Metal‐Organic Framework Thin‐Film Growth

“…[2,3] However, it remains difficult to directly apply these methods to the microchip and electronics fabrication processes which are typically operated under vacuum with gas phase deposition methods (e. g., ALD, CVD, and PVD), since the solvents can corrode the overall fabrication equipment and contaminate the vacuum system. Furthermore, many MOFs (e. g., MOF-5, MOF-74, UiO-66, MIL-53, and MIL-101) [17,[26][27][28][29][30][31] need to use toxic polar solvents (e. g., DMF and DEF) [32] for the thin film growth following their powder-type synthesis recipe. These chemicals become toxic chemical wastes after being used, and are regulated under the TSCA (Toxic Substances Control Act) [33] in United States and REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) [34] in Europe because of their biological and environmental toxicity, running up extra expenses for their secure disposal.…”

Water-Dispersible Nanocatalysts with Engineered Structures: The New Generation of Nanomaterials for Energy-Efficient CO2 Capture

“…Among different CO 2 capture techniques, like absorption, , adsorption, , cryogenic distillation, , and membrane separation, , chemical absorption using aqueous amine solutions, particularly monoethanolamine (MEA), has attracted great attention as a mature technology for large-scale operations . Nevertheless, the energy-intensive nature of CO 2 absorption–desorption processes markedly impacts the costs of operation, creating a solid barrier to its widespread deployment in different industries. , This drawback is mainly due to the slow kinetics of CO 2 desorption reactions in the solvent regeneration process.…”