Abstract
This report details the synthesis of Mn-doped CaFe2O4 nanoparticles supported on biochar. We evaluate the photocatalytic activity of the resulting nanocomposite towards the degradation of Rhodamine B (RhB) dye, a well-known environmental pollutant. Doping CaFe2O4 with Mn and subsequently incorporating it onto biochar results in enhanced visible light absorption and diminished photoluminescence (PL) intensity. The photocatalyst Mn-doped CaFe2O4/Biochar was synthesized via a hydrothermal method. The morphology and photocatalytic characteristics of the synthesized catalyst were comprehensively scrutinized through powder X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), ultraviolet–visible diffuse reflectance spectroscopy (UV-DRS), and photoluminescence (PL) investigations. The photocatalytic properties of the catalyst were further assessed through the degradation of RhB dye, revealing a degradation efficiency of 97.31% within a 70-minute timeframe. The photocatalyst exhibits reusability for up to five cycles while maintaining a photocatalytic efficiency of more than 80%.
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