Thermal behavior studies of the homopolynuclear coordination compound iron(III) polyoxalate

- The thermal decomposition of [Fe(C2O4)(OH)(OH2)]n·0.3nH2O leads to Fe2O3 polymorphs.
- The products were analyzed using the diffuse reflectance technique, XRD, FTIR and SEM.
- The product obtained at 350 °C is a mixture of γ-Fe2O3 (majority) and α-Fe2O3 phases.
- Through the calcination at 800 °C the conversion of γ-Fe2O3 to α-Fe2O3 takes place.
- Precursor and conditions are important for obtaining Fe2O3 phases as nanoparticles.