Metal–organic framework/graphene oxide composites for CO₂ capture by microwave swing adsorption

Abstract

Metal-organic frameworks (MOFs)/Graphene oxide (GO) composites are of growing interest due to their properties which can exceed those of the pure components, including post-combustion CO2 capture. Series of composites suitable...

MIL-53 Metal–Organic Framework as a Flexible Cathode for Lithium-Oxygen Batteries

“…The low performance of MIL-53 can be explained by two main factors: (1) the lack of reactive open metal sites within the MIL-53 structure and (2) the low electronic conductivity of the MIL-53 electrodes (40 wt.% carbon used in the previous examples instead of the 25 wt.% used in our work). Accordingly, to overcome the MOFs' conductivity drawback, we envision the design of new materials, in particular the synthesis of MOF/C composites including highly conductive agents such as Ketjenblack or graphene oxide [38,39]. Combining the high conductivity of carbon with the high porosity and flexibility of the MOF could be an efficient way to enhance the electrochemical properties of MIL-53 electrodes for Li-O 2 batteries.…”

Research progress in metal–organic frameworks (MOFs) in CO2capture from post-combustion coal-fired flue gas: characteristics, preparation, modification and applications

“…This was attributable to that the combination of the functional groups of graphite oxide and the metal sites resulted in crystal surface defects, which created new micropores in GO@MOF-505 and increased the surface dispersion of the composite material. Muschi et al 117 used microporous water-stabilized MIL-91(Ti) and different contents of GO to prepare composite materials by in situ synthesis and post-synthesis separately for CO 2 capture from flue gas. Compared with the pure MIL-91, the CO 2 adsorption capacity of MIL-91(Ti)@5 wt% GO increased by 11% to 1.20 mmol g −1 at 303 K and 0.15 bar CO 2 partial pressure.…”

Structural Insight of MOFs under Combined Mechanical and Adsorption Stimuli

“…Alternatively, it is beneficial to exert control over network flexibility through an extraneous stimulus in order to modulate adsorbent dynamics indirectly. Therefore, multiple strategies to tune structural flexibility during gas adsorption have been explored theoretically and experimentally in recent years, including the use of electromagnetic radiation, [11] electric field, [12, 13] and temperature control [14, 15] . One appealing possibility is the use of mechanical stress, through the application of an external force [16] .…”

“…Therefore, multiple strategies to tune structural flexibility during gas adsorption have been explored theoretically and experimentally in recent years, including the use of electromagnetic radiation, [11] electric field, [12,13] and temperature control. [14,15] One appealing possibility is the use of mechanical stress, through the application of an external force. [16] This option has shown promise to tune the effective pore size of not only breathing MOFs [17][18][19][20] but also flexible carbons.…”