Metal-organic framework-808 has been functionalized with 11 amino acids (AA) to {produce|create|generate|make} a series of MOF-808-AA structures. The adsorption of CO2 {under|below|beneath} flue gas {conditions|circumstances|situations} revealed that glycine- and DL-lysine-functionalized MOF-808 (MOF-808-Gly and -DL-Lys) {have the|possess the} highest uptake capacities. Enhanced CO2 capture {performance|overall performance|efficiency|functionality} {in the|within the|inside the} presence of water was observed and studied {using|utilizing|making use of|employing|working with|applying} single-component sorption isotherms, CO2/H2O binary isotherm, and dynamic breakthrough measurements. The {key|important|crucial|essential} {to the|towards the|for the} favorable {performance|overall performance|efficiency|functionality} was uncovered by deciphering the mechanism of CO2 capture {in the|within the|inside the} pores and attributed {to the|towards the|for the} formation of bicarbonate as evidenced by 13C and 15N solid-state nuclear magnetic resonance spectroscopy {studies|research}. {Based|Primarily based} on these {results|outcomes|final results|benefits}, we examined the {performance|overall performance|efficiency|functionality} of MOF-808-Gly in simulated coal flue gas {conditions|circumstances|situations} and {found|discovered|identified|located} that {it is|it’s|it really is|it truly is|it can be|it is actually} {possible|feasible|achievable|attainable|doable|probable} to capture and release CO2 by vacuum swing adsorption. MOF-808-Gly was cycled {at least|a minimum of|at the very least|at the least|no less than} 80 {times|occasions|instances} with {full|complete} retention of {performance|overall performance|efficiency|functionality}. This study {significantly|considerably|substantially|drastically} advances our understanding of CO2 chemistry in MOFs by revealing how strongly bound amine moieties {to the|towards the|for the} MOF backbone {create|produce|develop|generate|make|build} the chemistry and {environment|atmosphere} {within the|inside the} pores, {leading|top|major} {to the|towards the|for the} binding and release of CO2 {under|below|beneath} mild {conditions|circumstances|situations} {without|with out|without having|with no|devoid of|without the need of} application of heat. 3,3′-Oxybis(propan-1-ol) Chemscene 2-Bromo-5-fluoro-4-nitropyridine In stock PMID:23551549
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