Synthesis of biogenic cerium oxide-supported osmium oxide nanoalloy from Oldenlandia umbellata L. plant extract for pharmacological applications

An osmium oxide nanoalloy (CeO2/OsO4 NA) surrounded by cerium oxide has been manufactured using a greenish extract that was extracted from the therapeutically valuable Oldenlandia umbellata L plant. The obtained cerium-embellished osmium oxide nanoalloy was examined by several kinds of methodologies, comprising diffraction of X-rays, using transmission electron microscopy (TEM), absorbance analysis (UV–visible), Fourier transforms for infrared radiation (FT-IR), and scanning electron microscopy (SEM). The calculations took place at 500 °C. Using X-ray diffraction analysis, the originality of the produced nanoalloy has been established, and its size of 23.2 nm was verified. The TEM determined that the crystallite dimensions of the discovered nanoalloy ranged between 22 and 24 nm. Remarkable anti-oxidant (scavenging) properties against the oxidizing agents hydrogen peroxide (H2O2) (1: 5 volume ratio) and 2,2-diphenyl-picryl-hydrazyl (DPPH) (7.1 μg/mL) molecules are demonstrated by the CeO2/OsO4 nanoalloy. When tested against dangerous bacteria such as Escherichia coli (E.C.), Staphylococcus aureus (S.A.), Klebsiella pneumoniae (K.P.), Bacillus subtilis (B.S.), and multi-drug resistant Pseudomonas aeruginosa (P.A.), the nanoalloy exhibited 93