Silver oxide (Ag2O) nanoparticles were synthesized through a simple chemical method using silver nitrate (AgNO3) in the presence of polyethylene glycol (PEG) as reducing agent. In current study, synthesis process by maintaining the solution pH using sodium hydroxide (NaOH) solution was investigated and compared. Zetasizer Nano series, X-ray diffraction (XRD) analysis, and Fourier transform infrared spectroscopy (FT-IR) studies were performed to confirm the size distribution measurement, chemical compound composition, crystallographic structure and functional group corresponding to Ag-O. Silver nanoparticles synthesized in the form of silver oxide were confirmed by the XRD study.