Recent advances in nanoporous NO gas sensors: synergizing Raman spectroscopy, IoT, and machine learning for high-performance detection.

Among various pollutants, nitrogen oxides (NO) stand out as particularly harmful irritant gases, known to cause airway inflammation at elevated concentrations. Chemiresistive gas sensing (CGS) has revolutionized gas detection with its low power consumption, cost-effectiveness, high sensitivity, fast response, and long-term stability. Traditional materials such as metal oxides, conducting polymers, and carbon-based materials used for NO detection often suffer from poor selectivity and require high operating temperatures, leading to high noise levels.