Preparation of Ce-ZnSnO3 nanocubes and acetone sensing application

Here, Ce-ZnSnO 3 nanocubes were synthesized via a simple one-step hydrothermal method. The gas-sensing performance toward acetone was investigated in terms of response, optimum operating temperature, response-recovery time and selectivity. The as-prepared 1% Ce-ZnSnO 3 nanocubes exhibit a high response of up to 215 toward 100 ppm acetone, with excellent selectivity toward acetone over other reducing gases, and also deliver outstanding response even under high humidity conditions. At 260 °C, this sample shows a fast response time of 2 s and recovery time of 1 s, while its optimum operating temperature is reduced by 40 °C. This study validates an effective strategy for enhancing the gas-sensing performance of ZnSnO 3 -based sensors through Ce modification.