Synthesis of Zinc Oxide (ZnO) Nano Particles Using Sol Gel Method as Active Material on Gas Sensor

Abstract

Synthesizing of indium oxide (In 2 O 3) nano particles using sol-gel process as an active sensing material of gas sensor has been carried out. As starting material, indium acetate/In(CH 3 COO) 3 was dissolved in diethylene glycol and heated up at 130 0 C until homogeneity is achieved. Nitric acid (HNO 3) was added under vigorous stirring where the resulting mixture was heated at 180 0 C for 5 hours. After drying at 400 0 C for 2 hours and annealing at 500 0 C for 1 hour, a yellow fine powder was obtained, which was identified by using XRD and SEM. From the observation it has been found that the materials are in nano size range.