Figure 3: Porosity measurements.
From: Highly mesoporous metal–organic framework assembled in a switchable solvent

Porosity properties of Cu3(BTC)2 determined by N2 adsorption–desorption method. (a) N2 adsorption–desorption isotherms of the Cu3(BTC)2 synthesized in CO2-expanded DMF at 2.0 MPa (blue curves), 4.5 MPa (red curves) and 6.6 MPa (green curves). (b) The mesopore size distribution curves for the Cu3(BTC)2 synthesized under the same conditions.