Sintesis Nanopartikel Perak Menggunakan Metode Poliol Dengan Agen Stabilisator Polivinilalkohol (Pva)

Abstract

__________________________________________________________________________________________ Silver nanoparticles are nanotechnology based product which can be applied as a catalyst and optic sensor detector. The factors that can effect on nanoparticle size are salt concentration and reductor agent. Silver nanoparticles are unstable material, so polyvinylalcohol needs to be added as a stabilizer agent in their synthesis. The aims of this research are to find out the effect of mole ratio of EG/Ag+ reductor and % PVA (b/v) in silver nanoparticles synthesis toward the characteristic of the resulted product. Silver nanoparticles are synthesized by using polyol method by dissolving AgNO3 into ethylen glycol as a reductor and polyvinylalcohol (PVA) as a stabilizer agent. Then, the characteristic of colloidal silver nanoparticles are analyzed by UV-Vis Spectrofotometre and TEM. The analysis of UV-Vis spectra showed that the most stable particle was silver nanoparticles which used polyvinylalcohol (PVA) 3 % on λ maks 417 to 418 nm. The TEM's characterization showed that silver nanoparticles which were synthesized by mole ratio EG/Ag+ 50:1 had the smallest particle size by range of 10.15–27.56 nm with the structure of face centered cubic's (FCC) crystal. The higher of the mole ratio reductor EG/Ag+ in silver nanoparticle synthesis, the higher absorbance's increasing