ZIF-67 with rhombic dodecahedron structure for enhanced humidity sensor operating at room temperature

In this paper, the humidity sensitive material ZIF-67 with rhombic dodecahedron structure was prepared by the co-precipitation method. The crystal structure, elemental composition, and morphology were comprehensively characterized utilizing diverse analytical techniques. The humidity sensing properties were investigated at room temperature (25 °C). The ZIF-67 humidity sensor exhibited preferable humidity sensing performance with a wide linear detection range (11% − 95% relative humidity (RH)), rapid response/recovery time (34 s/211 s), high response (120.05), good stability, and high resolution with a minimum detection limit of 1% relative humidity. The sensor also exhibited good repeatability and stability, demonstrating its potential applications in environmental monitoring, medical practice, aerospace technology, and other domains that require high-precision measurement. In addition, this study proposes a promising candidate material for humidity sensing, exhibiting vital potential in a specific area or application and having the potential to develop cutting-edge humidity sensors.