Preparation and Ammonia Sensing of Copper Iodide Nanomaterials Combined with Copper Iodide‐Isopropanolamine Complexes

Abstract With the increasing awareness of the hazards associated with ammonia (NH 3 ) contamination and the potential application of NH 3 detection in physical health monitoring, the exploration of high‐performance NH 3 sensors has attracted significant attention in recent years. In this paper, we prepared copper iodide (CuI) nanomaterials combined with CuI‐isopropanolamine (C 3 H 9 NO) complexes by dissolving CuI in C 3 H 9 NO and subsequent annealing. The resulting product demonstrated exceptional sensing performance to 0.15 (mole fraction) NH 3 , exhibiting a maximum response of 7.5×10 5 with a response time of 5 s. The achieved detection limit was 10 ppm. Our findings provide a valuable reference for further research on NH 3 sensors utilizing complexes formed by copper compounds and organic amines.