Using the MWA synthesis method, a large number of metal carboxylate-based MOFs (M = Fe, Cr, Ti, Ce, Zn etc.) were produced. The first MOF, CrMIL-100, was produced with a 44% yield by MW irradiation at 220 ºC for 4 hours . The MW irradiation-based synthesis of CrMIL-101 led to uniform nanoscale size. CrMIL-101 nanocrystals with diameters of around 50 nm were created by lowering the quantity or raising the pH of the reactants, yielding 37% without the use of hydrofluoric acid (HF) . Using DMF as the solvent, in 10 minutes at 150ºC, 200 nm-diameter FeMIL-101 crystalline nanoparticles were produced . With a yield of 27%, in 10 minutes at 95 ºC, cubic-structured IRMOF-1 (isoreticular MOF) crystals with lengths ranging from 2 to 4 lm were created. A further study found that decreasing the H2BDC content in the preparatory solution decreased the highly crystalline IRMOF-1's size (down to 1 lm in diameter)