在潮湿环境中连续监测氨(NH3)对气体传感应用提出了显著的挑战,因为其对传感器灵敏度的影响。本工作研究了利用ReS2/Ti3C2Tx异质结构作为传感平台在自然潮湿环境中对NH3的检测。通过水热合成方法在Ti3C2Tx片的表面上垂直生长ReS2纳米片,导致形成ReS2/Ti3C2Tx异质结构。结构,形态学,使用各种最先进的技术研究了ReS2/Ti3C2Tx的光学特性,包括扫描电子显微镜,透射电子显微镜,X射线衍射,X射线光电子能谱,zeta电位,Brunauer-Emmett-Teller技术,和拉曼光谱。与ReS2和Ti3C2Tx相比,异质结构的比表面积增加了1.3倍和8倍,分别,潜在地增强活性气体吸附位点。基于ReS2/Ti3C2Tx的传感器的电气研究表明,在室温下15-85%的相对湿度范围内,选择性增强,对10ppmNH3的传感响应范围为7.8%至12.4%。这些发现突出了ReS2和Ti3C2Tx的协同作用。为高湿度环境中的NH3传感提供有价值的见解,并在气体传感机理中进行了解释。
Continuous monitoring of ammonia (NH3) in humid environments poses a notable challenge for gas sensing applications because of its effect on sensor sensitivity. The present work investigates the detection of NH3 in a natural humid environment utilizing ReS2/Ti3C2Tx
heterostructures as a sensing platform. ReS2 nanosheets were vertically grown on the surface of Ti3C2Tx sheets through a hydrothermal synthetic approach, resulting in the formation of ReS2/Ti3C2Tx
heterostructures. The structural, morphological, and optical properties of ReS2/Ti3C2Tx were investigated using various state-of-the-art techniques, including scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, zeta potential, Brunauer-Emmett-Teller technique, and Raman spectroscopy. The
heterostructures exhibited 1.3- and 8-fold increases in specific surface area compared with ReS2 and Ti3C2Tx, respectively, potentially enhancing the active gas adsorption sites. The electrical investigations of the ReS2/Ti3C2Tx-based sensor demonstrated enhanced selectivity and superior sensing response ranging from 7.8 to 12.4% toward 10 ppm of NH3 within a relative humidity range of 15-85% at room temperature. These findings highlight the synergistic effect of ReS2 and Ti3C2Tx, offering valuable insights for NH3 sensing in environments with high humidity, and are explained in the gas sensing mechanism.