PHYSICS AND MATHEMATICS

Research of photocatalytic activity of BiFe1-xMnxO3 nanoparticles in decomposition of methylene blue

Luu Thi Nhan

Hanoi Industrial University

Abstract: The nanosized multiferroic powders BiFe1-xMnxO3, synthesized by the sol-gel method, are the studied objects. The samples are calcined at appropriate temperatures and within a given period. A study of the absorption spectra in the UV-visible area of the fabricated samples showed that doping with Mn reduces the bandgap (from 2.11 eV to 1.94 eV). This will increase the photocatalytic activity of the BFO material system, which will make the application more practical. The results obtained show that BiFe1-xMnxO3 nanoparticles in this work provide the possibility to decompose methylene blue. When doping Mn in BFO, the decomposition efficiency increases. However, this efficiency is not high.

Keywords: bismuth ferrite, multiferroic, absorption spectrum, photocatalytic activity, methylene blue.

DOI: 10.23670/IRJ.2020.97.7.001