Synthesis, characterisation and photo-catalytic activity of CeO₂/Fe₂O₃ nano-composite
by Ahmed Ali Ahmed Farghali; Shimaa Gamil Sayed
International Journal of Nanoparticles (IJNP), Vol. 8, No. 2, 2015

Abstract: Preparation of nano-composite mixed oxides has a great current interest because it can improve the behaviour of the two metal oxides and enhance formation of new stable compounds which have different chemical and physical properties. Nano-composite CeO₂-Fe₂O₃ samples with different molar ratios of the two oxides have been synthesised by co-precipitation method to study the effect of Fe₂O₃ doping on the magnetic properties and catalytic activity of CeO₂. The prepared nano-sized catalysts are characterised by XRD, TEM and SEM. Magnetic properties were measured to evaluate the proposed nano-composite samples. From magnetic measurements it was established that the saturation magnetisation in all doped samples is higher than in pure ceria. A great application of the prepared nano-composites, with a vital role in our daily life, is the purification of the polluted waters from some toxic dyes. Complete photo-catalytic degradation of toxic Bromopyrogallol red dye (BPR) is achieved revealing that all doped samples have higher catalytic activities than those of pure catalysts (CeO₂ and Fe₂O₃).

Online publication date: Thu, 17-Sep-2015

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