Janus AsP monolayers: a promising 2D platform for NO and NO 2 gas sensing

adsorption, highlighting both sensitivity and potential selectivity. The reversible nature of the physical adsorption, confirmed by charge density difference and electron localization function analyses, further supports practical sensor applications. These findings demonstrate that Janus AsP is a promising candidate for high-performance nitrogen oxide detection and provides theoretical guidance for the design of next-generation 2D material-based gas sensors.