The macroscopic structural images of the cryogels were taken using SEM. The qualitative SEM images were graphically fitted using the algorithm "Local Thickness" which provides lowerbound estimates of pore sizes . DVS and SAXS were performed to probe the microscopic structural details of the cryogels to assess their meso-and microporosities. Dynamic vapour sorption data were collected on DVS Resolution from Surface Measurement Systems. Small angle X-ray Scattering measurements were conducted on a SAXSpoint 2.0. The decay of the scattering intensity I(q) as a power law was fitted using the power law function and the surface fractal model, both available in the analysis program SasView. More details on the experimental methods on SEM-local thickness, SAXS, and DVS are available in Section 3 of Supporting Information.