The Effect of Microwave Irradiation on Synthesis of Gold Nanoparticles Using Ethanol Extract of White Bol Guava Leaves

Abstract

The aim of this research was to determine the effect of microwave radiation on the synthesize of gold nanoparticles using ethanol extract of white bol guava leaves. 50 mL of 25 ppm HAuCl4 solution was synthesized using ethanol extract of white bol guava leaves to convert Au3+ to Au0 with 0.75 mL and synthesized using microwave and without microwave. Characterization of gold nanoparticles (Au-NPs) using Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) instruments. Based on the results, the microwave irradiation has a significant effect on the formation of Au-NPs using ethanol extracts of white bol guava leaves, based on the analysis using XRD, the size of Au-NPs was 17.13 nm with microwave irradiation and 17.57 nm without without microwave irrdaiation. Based on the results of SEM-EDS obtained Au-NPs by the microwave irradiation of 54.92%, while without a microwave irradiaton of 42.17 %.