Wang Lei, Yao Xinqi, Yuan Shuaishuai, Gao Yang, Zhang Ruhang, Yu Xinhai, Tu Shan-Tung, Chen Shijian
MOE Key Laboratory of Pressure Systems and Safety, East China University of Science and Technology Shanghai 200237 P.R. China
School of Mechanical and Power Engineering, East China University of Science and Technology Shanghai 200237 P.R. China.
RSC Adv. 2023 Feb 21;13(9):6264-6273. doi: 10.1039/d2ra06903b. eCollection 2023 Feb 14.
An ultra-high performance humidity sensor based on a CuO/TiCT MXene has been investigated in this work. The moisture-sensitive material was fabricated by a self-assembly method. The morphology and nanostructure of the fabricated CuO/TiCT composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectra. The humidity sensing abilities of the CuO/TiCT sensor in the relative humidity (RH) range from 0% to 97% were studied. The results showed that the humidity sensor had a high sensitivity of 451 kΩ/% RH, short response time (0.5 s) and recovery time (1 s), a low hysteresis value, and good repeatability. The CuO/TiCT sensor exhibited remarkable properties in human respiration rate monitoring, finger non-contact sensing, and environmental detection. The moisture-sensitive mechanism of CuO/TiCT was discussed. The fabricated CuO/TiCT showed great potential in the application of moisture-sensitive materials for ultra-high-performance humidity sensors.
本工作研究了一种基于CuO/TiCT MXene的超高性能湿度传感器。通过自组装方法制备了湿敏材料。利用扫描电子显微镜、透射电子显微镜、X射线衍射和X射线光电子能谱对制备的CuO/TiCT复合材料的形貌和纳米结构进行了表征。研究了CuO/TiCT传感器在0%至97%相对湿度（RH）范围内的湿度传感能力。结果表明，该湿度传感器具有451 kΩ/% RH的高灵敏度、0.5 s的短响应时间和1 s的恢复时间、低滞后值以及良好的重复性。CuO/TiCT传感器在人体呼吸率监测、手指非接触传感和环境检测方面表现出显著性能。讨论了CuO/TiCT的湿敏机理。所制备的CuO/TiCT在超高性能湿度传感器湿敏材料应用中显示出巨大潜力。
