The widespread presence of dyes in water necessitates study to mitigate these hazardous substances. The current investigation synthesized Fe₃O₄/activated carbon (AC) doped with ZnO to create the Fe₃O₄/AC@ZnO composite, utilized for the photocatalytic degradation of Congo red dye. Activated carbon was produced from bamboo utilizing KOH as an activator. The synthesized Fe₃O₄/AC@ZnO composite was characterized utilizing various instruments, including X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy with Electron Dispersive X-ray Spectroscopy (SEM-EDS), Vibrating Sample Magnetometry (VSM), BET surface area analysis. The absorbance of Congo red dye was assessed UV-Vis Diffuse Reflectance Spectroscopy (UV-Vis DRS). Fe₃O₄/AC@ZnO composite exhibits magnetic properties with a magnetic moment of 59.37 emu/g, a bandgap of 2.16 eV, and a surface area of 131.56 m²/g. Fe₃O₄/AC@ZnO has tremendous performance as catalyst under visible light, achieving a 99.20% reduction of Congo red dye at pH 4, a dosage of 0.3 g/L, a dye concentration of 20 mg/L, and an irradiation time of 80 min. Furthermore, the catalyst exhibits significant stability, with an efficiency of 92% after five repetitions. The superoxide anion (•O₂⁻) plays a fundamental function in degradation. The pseudo-first-order model effectively describe the kinetic behavior of the photocatalytic degradation of Congo red dye.
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., & Hariani, P. L. (2025). ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye. Egyptian Journal of Chemistry, (), -. doi: 10.21608/ejchem.2025.362947.11349
MLA
Fahma Riyanti; Erida Novrilia; Fatma Fatma; Desnelli Desnelli; Widia Purwaningrum; Poedji Loekitowati Hariani. "ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye", Egyptian Journal of Chemistry, , , 2025, -. doi: 10.21608/ejchem.2025.362947.11349
HARVARD
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., Hariani, P. L. (2025). 'ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye', Egyptian Journal of Chemistry, (), pp. -. doi: 10.21608/ejchem.2025.362947.11349
VANCOUVER
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., Hariani, P. L. ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye. Egyptian Journal of Chemistry, 2025; (): -. doi: 10.21608/ejchem.2025.362947.11349
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