Compositional effects on the structure, electrochemical behavior, and biocompatibility of g-C3N4/CaxZn1-xFe2O4 nanocomposites

초록

This study presents the design and characterization of novel g-C3N4/CaxZn1-xFe2O4 (x = 0.2 and 0.5) nanocomposites, denoted as GCZF-1 and GCZF-2, developed to integrate magnetic, electrochemical, and biocompatible functionalities within a single material system. XRD confirms crystalline phase formation, while FESEM and TEM reveal nanosized, agglomerated morphologies with average particle sizes of similar to 12 nm (GCZF-1) and similar to 16 nm (GCZF-2). FTIR and XPS analyses verify the presence of metal-oxide bonds and surface functional groups. Nitrogen adsorption-desorption measurements indicate mesoporous structures, with GCZF-1 exhibiting a higher surface area (12.39 m(2)/g). Both samples display superparamagnetic behavior, and electrochemical analysis reveals pseudocapacitive characteristics. Notably, GCZF-2 achieves excellent cycling stability (99.4 % retention), while cytocompatibility assays confirm its potential for safe biomedical and energy storage applications. The innovation lies in combining g-C3N4 with mixed Ca-Zn ferrite to achieve multifunctional performance in a single composite.

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