Abstract
Abstract Cerium oxide nanoparticles (CeO 2 -NPs) were synthesized via the sol–gel method in gelatin media. Long-chain gelatin compounds were utilized to terminate the growth of CeO 2 -NPs and stabilize them. The CeO 2 -NPs were characterized by a number of techniques, including X-ray diffraction analysis (XRD), UV–vis spectrophotometry, and high-magnification transmission electron microscopy (TEM). The CeO 2 -NPs calcined at different temperatures exhibited a cubic fluoride structure with sizes less than approximately 10 nm. The influence of the calcination temperature on the morphology of CeO 2 -NPs was also investigated. In vitro cytotoxicity studies on neuro2A cells showed a dose-dependent toxicity with non-toxic effect of concentration below 10 μg/mL. The results indicated that gelatin is an interesting material that can be used as a stabilizer in the sol–gel processes for preparing small CeO 2 -NPs.
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