Selective detection of carbon dioxide using LaOCl-functionalized SnO2 nanowires for air-quality monitoring

► We have demonstrated a facile semiconductor gas sensor platform for selective detection of CO2 gas. ► This technique can solve the problem of semiconductor nanowires gas sensor that is poor sensitive to CO2 gas. ► The results are important because it can be applied to develop multi-sensors based on SnO2 nanowires for environmental monitoring.