本发明的目的在于提供一种基于PANI/h-MoO₃复合材料的氨气传感器及其制备方法和应用，本申请通过化学浴沉积法制备了h-MoO₃纳米棒，通过原位化学氧化聚合法将h-MoO₃纳米棒与PANI复合，构件P-N异质结增强气敏性能，最后将PANI/h-MoO₃薄膜包覆于具有Au交叉电极的聚酰亚胺(PI)衬底上得到氨气传感器，所制备的氨气传感器在室温下可对氨气响应，同时拥有较低的检出限和较短的恢复时间，同时还具有一定柔性，可与可穿戴设备进行集成。

The purpose of the present invention is to provide an ammonia sensor based on PANI/h-MoO₃ composite material and its preparation method and application. The present application prepares h-MoO₃ nanorods through chemical bath deposition method, and composites MoO₃ nanorods with PANI through in-situ chemical oxidation polymerization method. The P-N heterojunction of the component enhances the gas sensing performance. Finally, the PANI/h-MoO₃ film is coated on a polyimide (PI) substrate with Au cross electrodes to obtain an ammonia sensor, The prepared ammonia sensor can respond to ammonia at room temperature, with a lower detection limit and shorter recovery time. It also has a certain degree of flexibility and can be integrated with wearable devices.