High Performance CeO2 Nanoparticles for Real-Time NO2 Detection
摘要
Cerium oxide (CeO2) nanoparticles (NPs) were prepared via cost-effective sol–gel route. XRD, SEM, and EDAX techniques was utilized to the crystallographic, morphological, and compositional analysis. Gas sensing characteristics of CeO2 sensor were investigated through customly invented gas sensing unit. CeO2 NPs annealed at 500 °C delivers admirable selectivity towards NO2 gas. CeO2 sensor examined at distinctive working temperatures (150, 200, and 250 °C) and gases such as NO2, CO2 and CO. CeO2 NPs sensor presents prominent sensitivity (33%) towards oxidizing NO2 gas at 200 °C with remarkable stability (75.7%).