ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., Hariani, P. (2025). ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye. EKB Journal Management System, (), -. doi: 10.21608/ejchem.2025.362947.11349
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". EKB Journal Management System, , , 2025, -. doi: 10.21608/ejchem.2025.362947.11349
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., Hariani, P. (2025). 'ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye', EKB Journal Management System, (), pp. -. doi: 10.21608/ejchem.2025.362947.11349
Riyanti, F., Novrilia, E., Fatma, F., Desnelli, D., Purwaningrum, W., Hariani, P. ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye. EKB Journal Management System, 2025; (): -. doi: 10.21608/ejchem.2025.362947.11349

ZnO doped Fe3O4/Activated carbon Composite for High Efficient Photocatalytic Degradation of Congo red Dye

Egyptian Journal of Chemistry
Articles in Press, Accepted Manuscript, Available Online from 23 April 2025  XML
Document Type: Original Article
DOI: 10.21608/ejchem.2025.362947.11349
View on SCiNiTO View on SCiNiTO
Authors
Fahma Riyantiorcid ; Erida Novrilia; Fatma Fatma; Desnelli Desnelliorcid ; Widia Purwaningrumorcid ; Poedji Loekitowati Hariani email orcid
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir 30662, Indonesia
Abstract
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.
Keywords
Fe3O4/AC@ZnO composite; magnetism; photocatalytic degradation; Congo red; recycle
Statistics
Article View: 97