Datura metel L. Leaves extract mediated CeO₂ nanoparticles: Synthesis, characterizations, and degradation activity of DPPH radical

CeO₂ nanoparticles (NPs) were successfully prepared by the precursor of Ce(NO₃)₂, and Datura metel L. leaves extract (DME) as a source of weak base, and capping agents. CeO₂ NPs were characterized by UV–Vis spectrophotometer, FT-IR, XRD, SEM-EDX, and TEM. The CeO₂ NPs were formed at the maximum wavelength of 252 nm confirmed by UV–Vis spectrophotometer. CeO₂ NPs have a particle size around 5–15 nm with a spherical shape. XRD characterization confirms that CeO₂ crystals were analyzed as face-centre cubic. The formed CeO₂ NPs were tested for the degradation of 1,1-Diphenyl-2-Picrylhydrazyl (DPPH) as a radical compound. In addition, DPPH was degraded into 1,1-Piphenyl-2-Picrylhydrazine, which was well-known as a non-radical compound signed by the decrease of absorbance at the maximum wavelength of 516 nm and the solution colour changed from purple to colourless. At last, the degradation percentage of DPPH radical using CeO₂ NPs was found to be 16.61%.