Tunable magnetic and electrochemical properties of CuxZn0.5-xMg0.5Fe2O4/ CeO2 /CuFe2O4 nanocomposites with excellent biocompatibility

초록

This study systematically explored the properties of CuxZn0.5-xMg0.5Fe2O4 (x = 0.1-0.3)/CeO2/CuFe2O4 nanocomposites, designated as CZMF@CC1, CZMF@CC2, and CZMF@CC3. Structural analysis using XRD confirmed the formation of crystalline CeO2 along with spinel ferrite phases and indicated nanoscale crystallite sizes. Morphological characterization via FESEM and TEM revealed that CZMF@CC3 exhibited more uniform particles with reduced aggregation compared to CZMF@CC1. High-resolution TEM (HRTEM) images and elemental mapping further validated their crystalline structure and uniform elemental distribution. FTIR spectra identified characteristic hydroxyl and functional groups, while thermal studies showed a stable, multi-step decomposition behavior. BET analysis demonstrated mesoporous structures, with surface area decreasing from CZMF@CC1 to CZMF@CC3. Magnetic measurements indicated superparamagnetic properties throughout the series, with CZMF@CC1 showing the highest saturation magnetization (Ms). Electrochemical evaluations highlighted CZMF@CC2 as the most promising electrode material, achieving a specific capacitance (Cs) of 424 F/g at 2 A/g. Biocompatibility assessments, including MTT and Live/Dead assays, confirmed that these nanocomposites were safe for both normal and cancer cell lines.

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