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In recent years, polymer/metal oxide nanoparticles as a high-performance nanomaterials have gained great attention in different industrial areas such as biotechnology, cosmetic, automotive, textile, and concrete. In this study, novel chitosan/cerium oxide nanoparticles (Chi/CeO₂ NPs) were synthesized to improve the bioavailability of the drug based on the assembly of inorganic nanoparticles at the polymer-NPs interfaces. The surface morphological property, chemical structure and drug release profile of synthesized NPs were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectrophotometer (FTIR) X-ray diffractometer (XRD), and UV–visible technique. The particle size of spherical Chi/CeO₂ NPs was found to be < 40 nm with a prepotent surface. Different kinetic model parameters such as zero-order, first-order, Higuchi, Bhaskar, and Ritger-Peppas models were …