• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/040/01/0093-0100

    • Keywords

       

      BiFeO$_3$; lanthanum; magnetic property; photocatalytic activity.

    • Abstract

       

      Single-phase La-substituted bismuth ferrite (Bi$_{1−x}$La$_x$FeO$_3$) nanoparticles have been synthesized by thermal decomposition of a glyoxylate precursor. The crystal structure transition of BiFeO3 from the rhombohedral(R3c) to the cubic $Pm\bar{3}m$ structure by La addition was confirmed by X-ray diffraction and infrared spectrometry methods. Furthermore, the Bi$_{1−x}$La$_x$FeO$_3$ nanoparticles showed a weak ferrimagnetism behaviour, while the magnetization increased from 0.18 to 0.48 emu g$^{−1}$ with La substitution. The Bi$_{1−x}$La$_x$FeO$_3$ nanoparticles exhibitedstrong absorption in the visible region with the optical band gap calculated from Tauc’s plot in the range of 2.19–2.15 eV. Furthermore, the effects of La substitution on the photodegradation of the methylene blue (MB) undervisible light were also studied. The photodegradation of MB dye was enhanced from 64 to $\sim$99% with increasing La substitution from $x = 0$ to 0.1 and then decreased to 8% for $x = 0.15$.

    • Author Affiliations

       

      S M MASOUDPANAH1 S M MIRKAZEMI1 R BAGHERIYEH1 F JABBARI1 F BAYAT1

      1. School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran 13114-16846, Iran
    • Dates

       
  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.