Nano-LaFeO3 powder preparation by calcining an emulsion precursor

This letter describes a simple method to synthesize LaFeO3 nanocrystals by calcining an emulsion precursor. The precursors and derived oxide powders were characterized by differential thermal analysis, thermogravimetric analysis, X-ray diffraction, transmission electron microscopy, Raman spectroscopy and UV–vis NIR spectroscopy. Phase pure LaFeO3 with well-crystallized particle was synthesized at 700 °C for 2 h in air. The average particle size determined from TEM study is 32 nm. UV–vis NIR spectrum indicates that the LaFeO3 nanocrystals prepared by this method could be a kind of photocatalytic material.