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A simple solid-state method to synthesize nanosized ferromagnetic \(\upalpha \)-\(\hbox {Fe}_{2}\hbox {O}_{3}\) with enhanced photocatalytic activity in sunlight

  • Madhavi D SheteEmail author
  • Julio B Fernandes
Article
  • 68 Downloads

Abstract

\(\upalpha \)-\(\hbox {Fe}_{2}\hbox {O}_{3}\) was synthesized by preparing a mixture of Fe(III) nitrate with urea as a precursor. The yellowish coloured precursor was calcined at \(400{^{\circ }}\hbox {C}\) for 2 h, resulting in the formation of bright red coloured hematite. The surface properties and catalytic activity were compared with a reference sample prepared without the use of urea. It was observed that urea-induced synthesis resulted in a sample having nanosize and large lattice strain, accompanied by the development of ferromagnetic behaviour. The catalytic activity was evaluated for the decomposition of \(\hbox {H}_{2}\hbox {O}_{2}\) through the photo-Fenton process in sunlight. The urea-synthesized sample showed an usually large photo-Fenton effect and the catalyst could be easily recovered and reused due to its ferromagnetic behaviour.

Keywords

Hematite ferromagnetism lattice strain photo-Fenton process \(\hbox {H}_{2}\hbox {O}_{2}\) 

Notes

Acknowledgements

One of the authors, Madhavi Shete is grateful to UGC-BSR fellowship for providing student fellowship.

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of ChemistryGoa UniversityTaleigao PlateauIndia

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