Single-phase BiFeO3 and BiFeO3-Fe2O3 nanocomposite photocatalysts for photodegradation of organic dye pollutants


Banoth P. Narsaiah B.P. De Los Santos Valladares L. Kargin J. Kollu P.
30 March 2023Royal Society of Chemistry

Nanoscale Advances
2023#5Issue 92646 - 2656 pp.

The application of a novel BiFeO3 (BFO)-Fe2O3 composite (called BFOF) as a photocatalyst for the degradation of methylene blue is reported. To improve the photocatalytic effectiveness of BiFeO3, we synthesized the first BFOF photocatalyst by adjusting the molar ratio of Fe2O3 in BiFeO3 using microwave-assisted co-precipitation. The UV-visible properties of the nanocomposites showed excellent absorption of visible light and reduced electron-hole recombination properties compared to the pure phase BFO. Photocatalytic studies on BFOF10 (90% BFO, 10% Fe2O3), BFOF20 (80% BFO, 20% Fe2O3), and BFOF30 (70% BFO, 30% Fe2O3) have shown that they decompose Methylene Blue (MB) in sunlight better than the pure BFO phase in 70 minutes. The BFOF30 photocatalyst was the most effective at reducing MB when exposed to visible light (94%). Magnetic studies confirm that the most effective catalyst BFOF30 has excellent stability and magnetic recovery properties due to the presence of magnetic phase Fe2O3 in the BFO.



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School of Physics, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Telangana, Hyderabad, 500046, India
CASEST, School of Physics, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Telangana, Hyderabad, 500046, India
Cavendish Laboratory, Department of Physics, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE 2, United Kingdom
Laboratorio de Cerámicos y Nanomateriales, Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Ap. Postal 14-0149, Lima, Peru
Faculty of Physics and Technology, L. N. Gumilyov Eurasian National University, Nur Sultan, 010000, Kazakhstan

School of Physics
CASEST
Cavendish Laboratory
Laboratorio de Cerámicos y Nanomateriales
Faculty of Physics and Technology

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