Vol. 12, Issue 12 (2023)

Green synthesis of NiO NPs with biological systems is becoming a growing field, especially in plant extracts nanotechnology. Biological reducing agents have been interpreted worldwide to lessen the impact of toxic chemicals applied in development of nanoparticles. In present research, work deals with green synthesis & characterization of NiO NPs via Psidium guajava leaf extract. SEM analysis confirmed that the highly agglomerated spherically shape of the synthesized nickel oxide nanoparticles. The TEM images indicated that Ni NPs had a homogeneously spherical shape and found to support the size reduction and confirmed that the synthesized nanoparticles are in nanometer range. EDX results confirmed the presence of nickel and oxygen in the synthesized NiO NPs. FT-IR studies clearly showed the formation of NiO and indicated that the plant extract contains various phytochemicals. Also, the UV was performed to investigate the optical nature of the prepared NiO nanoparticles.