A versatile, convenient, and nontoxic solvothermal method for the synthesis of
nanocrystalline iron, chromium, and manganese oxides is described. This method employs
the reactions of metal acetylacetonate precursors and oxygen‐containing solvents in a
reaction to prepare metal oxide nanoparticles. Characterization of these nanocrystalline
materials was carried out employing transmission electron microscopy (TEM), high‐
resolution TEM (HRTEM), X‐ray diffraction (XRD), and elemental analysis.