High-Performance Room-Temperature Conductometric Gas Sensors: Materials and Strategies

Chemiresistive sensors have gained increasing interest in recent years due to the necessity of low-cost, effective, high-performance gas detect volatile organic compounds (VOC) and other harmful pollutants. While most sensing technologies rely on use high operation temperatures, which increase usage cost decrease efficiency power consumption, a particular subset can operate at room temperature (RT). Current approaches are aimed development high-sensitivity multiple-selectivity room-temperature sensors, where substantial research efforts been conducted. However, fewer studies presents specific mechanism action why those materials work how both enhance optimize their RT performance. Herein, we present strategies achieve for various materials, such as metals metal oxides (MOs), well some promising candidates, polymers hybrid composites. Finally, future outlook this technology is discussed.