Cost effective one-pot synthesis approach for the formation of pure Cr2O3 nanocrystalline materials

A simple onepot synthesis method is used for the preparation of pure Cr2O3 nanomaterials by varying the fuel efficiency of hexamine as phi(e) = 0, 1, 2, 3, 4, and 5. Powder XRD, TG / DTA, Raman, and FESEM-EDX are the characterization techniques used to examine the structural, microstructural, thermal, optical, and morphological features of obtained Cr2O3 nanomaterials. The XRD pattern confirms the as-prepared Cr2O3 nanomaterials are pure and it reveals the trigonal structure with the space group, R-3c h (167). The D values for the different Cr2O3 nanomaterials are in the range of 15.8-21.6 nm. The TGA shows the maximum weight loss of 15 % for the Cr2O3 nanomaterials obtained with phi(e) = 0 and the minimum weight loss of 1.5 % with phi(e) = 2. The fine agglomerated particles are seen for the combustion product (phi(e) = 2) of Cr2O3 nanomaterials by FESEM images.