Role of Capping Agent in the Synthesis of Silver Nanoparticles

ABSTRACT In this work silver nanoparticles is prepared by chemical reduction of silver nitrate solution. The formation of silver nanoparticles is indicated by Uv/Visspectroscopy. The surface Plasmon resonance peak in absorption spectra of silver colloidal solution exhibited at 427nm and 398nm. The sharp reflectionat (111), (200), (220) and (311) is shown by X- ray diffraction pattern which indicates the presence of silver nanoparticles. Transmission electronmicroscopy (TEM) revealed the average size of silver nanoparticles were 60nm and 100nm. In this paper we investigated the effect of capping agent onthe size of silver nanoparticles. Key words: AgNO 3 , Silver nanoparticles, XRD, TEM, SPR.the nanoparticles, many scientific efforts have made to investigate thedependence of those properties on the nanoparticle’s size, shape andcrystallinity. A variety of method can be used for synthesis of nanoparticles,such as chemical, electrochemical [14] , chemical vapour deposition [15] , reductionby ionizing radiation