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Title: Synthesis and characterization of cation-doped BiFeO<sub>3</sub> materials for photocatalytic applications
Authors: Madhu, C
Bellakki, Manjunath B
Manivannan, V
Keywords: Oxides
Chemical synthesis
Crystal structure
Magnetic properties
Photocatalytic properties
Issue Date: Apr-2010
Publisher: CSIR
Abstract: A sol-gel method was applied to synthesize Bi<sub>1-x</sub>M<sub>x</sub>FeO<sub>3</sub> (M = Mg, Al, Y) ceramic materials. Subsequently, these materials were structurally characterized by applying Rietveld refinement techniques. The magnetic properties of the synthesized materials were determined by SQUID measurements and their optical properties (band-gap) were determined by applying diffused reflectance (DR) techniques. The low band-gap nature of these materials enabled to them exhibit photocatalytic activity and accordingly 2% Y doped BiFeO<sub>3</sub> samples exhibited higher photocatalytic effect (18% compared to 14% for undoped). Under identical conditions, TiO<sub>2 </sub>standard exhibited only 7% degradation indicating superior properties of cation-doped bismuth ferrites.
Description: 131-139
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.17(2) [April 2010]

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