Mn doped SrFe12O19 fabricated via facile microemulsion route and solar-light-driven photocatalytic removal of crystal violet dye

A series of SrMnxFe12-xO19 NPs have been synthesized via microemulsion method. The effect of substitution of Mn on the structural, optical, ferroelectric, dielectric, and photocatalytic properties was evaluated. XRD pattern confirmed the formation of hexagonal monophase magneto-plumbite crystalline structures and particle size was in 26-40 nm range. The UV-visible analysis revealed the decrease of bandgap energy from 2.59 to 1.44 eV. The dielectric constant, dielectric loss and tangent loss were decreased, while AC conductivity values increased by increasing dopant content. The photocatalytic efficiency was examined against crystal violet dye and 96% dye degradation was achieved in 100 min (followed the first order kinetics) under visible light irradiation versus 60% for undoped material. The optical properties of SrMnxFe12-xO19 are enhanced significantly by doping, which make the SrMnxFe12-xO19 NPs a promising material to harvest wide range of solar light for photocatalytic ap-plications including dyes remediation in effluents under solar light irradiation.

Automated summary

A series of SrMnxFe12-xO19 NPs were synthesized via microemulsion method, and the effects of Mn substitution on the structural, optical, ferroelectric, dielectric, and photocatalytic properties were evaluated. The results showed that doping significantly enhanced the optical properties of SrMnxFe12-xO19, making it a promising material for photocatalytic applications including dye remediation.