Detection of NO, NO2, H2S, and SO2 by SnSe2 gas sensor at room temperature: DFT simulation and experimental validation

Key Points

• Detection of NO, NO2, H2S, and SO2 was achieved effectively with the SnSe2 gas sensor.
• Using density functional theory simulation, interaction mechanisms were examined for the target gases.
• The sensor performed accurately at room temperature, highlighting its practical feasibility.
• Results suggest that the SnSe2 gas sensor could significantly advance environmental sensing technologies.