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

Published version
Peer-reviewed

Repository DOI


Type

Article

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Authors

Banoth, Pravallika 
Narsaiah, Boya Palajonnala 
De Los Santos Valladares, Luis 
Kargin, Jumat 

Abstract

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.

Description

Keywords

4004 Chemical Engineering, 40 Engineering, 34 Chemical Sciences, 3406 Physical Chemistry

Journal Title

Nanoscale Adv

Conference Name

Journal ISSN

2516-0230
2516-0230

Volume Title

5

Publisher

Royal Society of Chemistry (RSC)