The [EMIM][TFSI] incorporated CuBTC sample, IL@CuBTC, was prepared via a wet impregnation technique as reported previously. A theoretical IL loading of 48 wt% (formula: Cu3C29.41O17.71N4.28S2.85F8.56H21.69), corresponding to 116 % of nominal pore volume occupancy in CuBTC, was chosen as a trade-off for impregnation, assuming that this amount would approach near-complete infiltration. XRD shown in Figure shows that the crystallinity of CuBTC was maintained after IL incorporation. Incorporation of IL in CuBTC was examined using FTIR analysis. The spectra presented in Figure show the presence of IL in the IL@CuBTC composite material, indicating that the IL has entered the pores of CuBTC, which is in good agreement with previous reports. To investigate the thermal behavior of the composite, thermogravimetric analysis coupled with differential scanning calorimetry (TGA-DSC) was performed on CuBTC, bulk IL, and the IL@CuBTC composite as presented in Figure . As expected, TGA-DSC of both CuBTC and the bulk IL in Figure show no phase transitions or mass-loss events prior to their respective decomposition onsets at ca. 340 °C and 440 °C.