A Facile Synthesis of Nano-Phasic Bi5FeTi3O15 Layered Photoferroelectrics for Photocatalytic Application Induced With Visible Light
摘要
In the present report, aurivillius phase Bi5FeTi3O15 (BFTO) nanoparticles with enhanced charge separation, attributed to their ferroelectric properties, have been successfully synthesized through a sol-gel method, and subsequently investigated their photocatalytic activity. Various analytical techniques, including X-ray diffraction(XRD), Raman Spectroscopy, Scanning electron microscopy (SEM), Energy Dispersive X-ray analysis (EDS), Fourier transform infrared spectroscopy (FTIR), Energy Dispersive X-Ray Fluorescence (EDXRF) and UV-Vis spectroscopy have been employed to investigate the structural features, surface morphology, and optical properties of the as-prepared samples. The XRD and subsequent Rietveld refinement confirmed that the BFTO nanoparticles exhibit a single-phase orthorhombic structure with the space group A21am. Furthermore, EDXRF and EDS confirm the formation of BFTO, UV-Vis spectra confirmed the occurrence of a direct band gap in the BFTO nanoparticles with a band gap energy of ~ 2.7 eV. Under an applied voltage of 8000 V, the remanent polarization (Pr) and coercive field have been evaluated as ~ 53.88 µC/cm² and 256.034 kV/cm, respectively. In addition, the degradation of Methyl Orange (MO) in an aqueous solution under visible light has been carried out to assess the photocatalytic activity of the as-synthesised BFTO nanoparticles. After nearly 3 h in white light irradiation, a notable rise in MO deterioration has been noted. Because of their high effectiveness in breaking down MO dye, BFTO nanoparticles show a lot of promise as a photocatalyst for the breakdown of hazardous & vulnerable compounds and other organic pollutants when exposed to visible light.