Highly sensitive g-C3N4 nanosheets as a potential candidate for the effective detection of NO2 gas via langasite-based surface acoustic wave gas sensor

In this work, 2D g-C 3 N 4 nanosheets were employed as a sensitive interface for high-performance NO 2 SAW gas sensors, operating at various environmental conditions. The immense sensitivity to NO 2 gas is attributed to the enhanced mass loading effect.