Humidity Sensor Based on Metal-Organic Framework Supported Au Nanoparticles for Low Humidity Detection
Xiaoya Miao, Ke Wu, Yunlong Yu, Zhiyan Ma, Yaping Song, Yanyu Cui, Sen Liu, Teng Fei, Tong Zhang
Abstract
In this work, a low-humidity sensor based on Au-HKUST-1 was proposed by the method of post-synthesis modification. The hydrophilicity and conductivity of the sensing film were improved by the catalysis of Au nanoparticles (Au NPs). The Au-HKUST-1 sensor performs high sensitivity in low-humidity environments, with a response value of 30.4 within the 10%–16% relative humidity (RH) range (1 kHz). Meanwhile, the sensor exhibits short response/recovery time (29/39 s) and high resolution (1% RH), as well as good repeatability. Furthermore, the sensing film could be used for humidity monitoring by colorimetric.
Topics & Concepts
HumidityNanoparticleMaterials scienceNanotechnologyOptoelectronicsEnvironmental scienceMeteorologyPhysicsGas Sensing Nanomaterials and SensorsAdvanced Nanomaterials in CatalysisMetal-Organic Frameworks: Synthesis and Applications