In this study, Citrus grandis or pomelo peel extract was used to synthesize silver nanoparticles (AgNPs). The effect of reaction time, amount of plant extract and concentration of silver nitrate which could influence the biosynthesis process were also studied. The synthesized AgNPs were then characterized by UV-Visible spectroscopy, Fourier transform infra-red spectroscopy (FTIR) and field emission scanning microscopy (FESEM) equipped with energy dispersive X-ray (EDX). The resulting UV-Vis spectra of synthesized AgNPs from pomelo peel extract showed standard surface plasmon resonance band in range of 401-433 nm which indicated the presence of AgNPs. FTIR spectra confirmed the existence of possible functional groups which might be responsible for the reduction of nanoparticles. Most of the synthesized AgNPs were observed in spherical shape which ranged between 20-30 nm under the Field Emission Scanning Electron microscope. The EDX analysis showed the strong signal at 3 keV from the silver atoms in the synthesized nanoparticles which confirmed that the synthesis of AgNPs was successful.
