Song Zihao, Luo Junhao, Ding Shumei, Ding Jiabao, Wang Qi, Zhang Zhongxi, Li Hongpeng, Zhang Chao
College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China.
Chem Asian J. 2025 May 15;20(10):e202401815. doi: 10.1002/asia.202401815. Epub 2025 Feb 4.
The sensitive detection of NO is crucial for environmental monitoring and improving quality of life. Herein, a ZnO@MoO core-shell nanocomposite was fabricated via a simple stepwise solution self-assembly and heat-treatment process. Remarkably, the ZnO@MoO sensor exhibited a high response value of 5.4 to 2 ppm NO at room temperature. Furthermore, it displayed excellent selectivity against interference gases such as CO, NH, methanol, ethylene, and trimethylamine, along with outstanding stability and repeatability under varying humidity conditions. The exceptional sensing performance of the ZnO@MoO sensor is attributed to the synergistic effects between ZnO and MoO, as well as the enhanced electron transfer rate enabled by the heterostructures. This work provides an effective strategy for advancing NO sensing capabilities in metal oxide composite sensors.
