Abstract
In this paper, bismuth ferrite and co-doped nanoparticle were synthesized by the tartaric acid modified sol–gel method. The XRD and Raman spectroscopy indicated that the structural phase changed from rhombohedral to orthorhombic. The nanocrystalline nature, grain size and morphology of the samples were confirmed using field emission scanning electron microscopy (FESEM) techniques. The ferromagnetic parameters increase with an increase in Sm-Cr co-doping concentration. Improved ferromagnetic properties Bi0.85Sm0.15Fe1-xCrxO3 VSM studies match with the EPR studies. The optical band gap energy of BFO and Bi0.85Sm0.15Fe1-xCrxO3 is 2.24 eV to 1.96 eV using UV–Visible spectroscopy. Compared to pristine BiFeO3, co-doped BiFeO3 nanoparticles exhibited the outstanding photocatalytic properties of methylene blue (MB) exposed to UV–Visible light irradiation. Bi0.85Sm0.15Fe0.95Cr0.05O3 nanoparticles showed 99.16 percent degradation at 90 min of radiation. The enhancement in BFO and Bi0.85Sm0.15Fe1-xCrxO3 nanoparticles' photocatalytic behaviors are contributed to changes in ionic radii, oxygen vacancies and narrow bandgap.
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