Studi Pendahuluan Penentuan Nilai Energi Band Gap Komposit Perak Silika (Ag/SiO2) Berbasis Sekam Padi

Abstract

Research on the synthesis of silver silica (Ag/SiO2) has been carried out using the sol-gel method using various concentrations of solution silver nitrate (AgNO3), namely 0.5; 0.6 and 0.7 M into the silica sol of rice husk by thermal treatment at 850°C. The purpose of this research is as a preliminary study to determine the energy band gap value of Ag/SiO2 composites through Uv-vis spectrophotometric characterization. Uv-vis analysis shows that the amount of AgNO3 concentration affects the energy band gap value. The greater the value of the concentration AgNO3 in the sample, the value of the energy produced will increase so that the more Ag content is formed and the batter it is used as an antibacterial agent.