Synthesis of MnFe₂O₄/g-C₃N₄ Composite for Enhanced Photocatalytic Degradation of Rhodamine B

Photocatalysis has attracted much attention because it can decompose water to produce hydrogen or reduce carbon dioxide to CH3OH, CH4 or other chemical materials. In this study, the MnFe2O4/g-C3N4 composite was fabricated by the co-precipitation method. Various techniques were used to characterize the MnFe2O4/g-C3N4 composite, including, FT-IR, Raman, XRD, SEM, EDS, and UV-Vis. Under UV light, the catalytic performance of MnFe2O4/g-C3N4 was tested by decomposing rhodamine B (Rh B). According to the findings, the catalyst is a typical spinel structure material with an excellent light response in 250-800 nm wavelength. The MnFe2O4/g-C3N4 composite catalyst can degrade over 82% of Rh B in 150 min. Cyclic experiments show that MnFe2O4/g-C3N4 has long-term stability for Rh B. Because of its heterojunction structure, photogenerated electrons from g-C3N4 surfaces may easily move to MnFe2O4, which can substantially increase photoelectron-hole pair separation. The use of the MnFe2O4/g-C3N4 compound as photocatalysts for the degradation of Rh B is evidenced by these findings.