You can check the porosity of your material using the SEM or FESEM analysis. From the BET surface area and BJH plot you can determine the porosity, pore size, etc. You can corelate the BET hysteresis with the pore types determined from the SEM analysis also. For example, for the mesoporous samples wedge like pores are observed with H3 type BET hysteresis (Article Synthesis of mesoporous Fe/Al/La trimetallic oxide for photo...