Visible‐Light Photocatalytic Properties of Weak Magnetic BiFeO₃ Nanoparticles

Abstract

Polycrystalline BiFeO3 nanoparticles (size 80–120 nm) are prepared by a simple sol–gel technique. Such nanoparticles are very efficient for photocatalytic decomposition of organic contaminants under irradiation from ultraviolet to visible frequencies. The BiFeO3 nanoparticles also demonstrate weak ferromagnetism of about 0.06 μB/Fe at room temperature, in good agreement with theoretical calculations.

Regular nanodomain vertex arrays in BiFeO3single crystals

“…7 On the other side, a similar argument might explain the small value of the polarization that still exists in ceramic materials compared to single crystals: The polycrystalline nature of ceramics involves a much larger surface-to-bulk ratio than a single crystal, and, if the observed kind of domain pattern is confined to the skin of the crystal, again the switching would be hampered. Finally, we may also speculate on a correlation between the particular photocatalytic properties of BFO 25 and the existence of such a particular form of the domain pattern at the crystal surface.…”

Preparation, structural and magnetic studies on BiFe1-xCrxO3 (x = 0.0, 0.05 and 0.1) multiferroic nanoparticles

“…[20][21][22][23] Visible light photocatalytic properties have been seen in BFO nanoparticles. 24 Microwave absorption properties of BiFeO 3 nanoparticles have been found to be better than those of bulk BFO. 25 Gas sensing properties have also been investigated in BiFeO 3 nanoparticles.…”

Fabrication and characterization of bismuth ferrite as an electron transport layer in perovskite photovoltaic devices

“…For instance, BiFeO 3 is a direct bandgap semiconductor, 15)17) and can absorb visible light. 16) A photocatalytic activity, 16) a switchable-diode effect 18) and photovoltaic effects 17)20) in BiFeO 3 were also reported. In particular, Zhao et al reported photovoltaic properties of BiFeO 3 /CH 3 NH 3 PbI 3 structure, and achieved a conversion efficiency of 1.41%.…”