Unveiling LiF-engineered MXene: a novel Ti3C2Tx/ZnO hybrid composite for highly selective and sensitive chemiresistive NH3 detection via Schottky barrier modulation at ambient temperature

A high-performance L3-Ti 3 C 2 T x /ZnO showed 50-fold higher NH 3 sensitivity than pristine ZnO, with the MDC of 0.1 ppm, fast response/recovery times, and long-term stability at 300 K for industrial and environmental safety.