Integrated study of Mg1-xMnxFe2O4/graphitic carbon nitride nanocomposites: From structure and magnetism to energy storage and cell viability

초록

The development of multifunctional materials with both high electrochemical performance and good biocompatibility remains a significant challenge for energy-storage and biomedical applications. In this work, Mg1-xMnxFe2O4/g-C3N4 nanocomposites with x = 0.3 and 0.4, denoted as MMFN-1 and MMFN-2, were synthesized and thoroughly characterized. Structural, morphological, surface, magnetic, electrochemical, and biological properties were investigated using XRD, FE-SEM, TEM, EDS, XPS, magnetic measurements, CV, GCD, and cell viability assays. The analyses confirmed the fruitful formation of mixed spinel ferrite nanoparticles anchored onto layered g-C3N4 sheets, producing a porous nanostructure with particle sizes of similar to 14-18 nm. Among the two samples, MMFN-1 exhibited superior crystallinity, a higher saturation magnetization (Ms = similar to 28.62 emu g(-)& sup1;), and a specific surface area (8.79 m & sup2; g(-)& sup1;). Electrochemical studies revealed enhanced pseudocapacitive behavior, characterized by prolonged discharge times and reduced charge-transfer resistance. In addition, MTT and Live/Dead assays performed on mouse muscle fibroblasts (BLO-11) and pancreatic cancer cells (PANC-1), the cell lines demonstrated cell viability above 80.80% at concentrations up to 1000 & micro;g mL(-)& sup1; , indicating favorable biocompatibility. These findings demonstrate that the optimized MMFN-1 nanocomposite combines excellent electrochemical characteristics with negligible cytotoxicity, making it a capable candidate for advanced energy-storage devices and biomedical applications.

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