Pengaruh Variasi Waktu Pemanasan Sintesis Perak Nitrat (AgNO3) Menggunakan Metode Reduksi Kimia

Abstract

Synthesis of silver nitrate using the chemical reduction method with variations in heating time for 1 hour, 2 hours and 3 hours has been successfully carried out. This study aims to determine the effect of variations in heating time on the phase structure, elemental concentration, morphology, and mass percentage of elements. The synthesis process was carried out by heating a mixture of silver and nitric acid at T = 85 °C for 1 hour, 2 hours and 3 hours, then the evaporation process was carried out at T = 125 °C for 10 minutes. The results of the XRF analysis on the AgNO3 samples showed differences in the percentage of Ag concentrations, with the largest percentage of Ag concentrations produced, namely 98.839% at a 2 hour heating time variation, the presence of impurities in the XRF results of AgNO3 samples at a concentration of more than 1%, with a concentration of impurities the largest is copper (Cu), this is what causes the synthesized sample to turn blue. The results of the XRD analysis showed that the AgNO3 phase had an orthorhombic structure with the largest percentage of AgNO3 produced, namely 27.85% at 2 hours of heating time variation.