基于二维（MoS WS）/聚苯胺纳米复合材料的传感器气敏性能的比较研究。
Comparative Study on Gas-Sensing Properties of 2D (MoS WS)/PANI Nanocomposites-Based Sensor.
作者信息
Parangusan Hemalatha, Bhadra Jolly, Al-Qudah Razen Amer, Elhadrami Elhassen Cheikh, Al-Thani Noora Jabor
机构信息
Qatar University Young Scientists Center (QUYSC), Qatar University, Doha P.O. Box 2713, Qatar.
Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar.
出版信息
Nanomaterials (Basel). 2022 Dec 11;12(24):4423. doi: 10.3390/nano12244423.
NH is a highly harmful gas; when inhaled at levels that are too high for comfort, it is very dangerous to human health. One of the challenging tasks in research is developing ammonia sensors that operate at room temperature. In this study, we proposed a new design of an NH gas sensor that was comprised of two-dimensional (TMDs, mainly WS and MoS) and PANI. The 2D-TMDs metal was successfully incorporated into the PANI lattice based on the results of XRD and SEM. The elemental EDX analysis results indicated that C, N, O, W, S and Mo were found in the composite samples. The bandgap of the materials decreased due to the addition of MoS and WS. We also analyzed its structural, optical and morphological properties. When compared to MoS and PANI, the proposed NH sensor with the WS composite was found to have high sensitivity. The composite films also exhibited response and recovery times of 10/16 and 14/16 s. Therefore, the composite PANI/2D-TMDs is a suitable material for NH gas detection applications.
氨气是一种极具危害性的气体；当以过高的浓度被吸入时，会对人体健康造成极大危害。研究中的一项具有挑战性的任务是开发能在室温下工作的氨气传感器。在本研究中，我们提出了一种新型氨气传感器的设计，该传感器由二维材料（过渡金属二硫属化物，主要是WS₂和MoS₂）和聚苯胺组成。基于X射线衍射（XRD）和扫描电子显微镜（SEM）的结果，二维过渡金属二硫属化物成功地融入到聚苯胺晶格中。元素能谱分析（EDX）结果表明，在复合样品中发现了碳（C）、氮（N）、氧（O）、钨（W）、硫（S）和钼（Mo）。由于添加了MoS₂和WS₂，材料的带隙减小。我们还分析了其结构、光学和形态学特性。与MoS₂和聚苯胺相比，所提出的含WS₂复合材料的氨气传感器具有高灵敏度。复合薄膜的响应时间和恢复时间分别为10/16秒和14/16秒。因此，聚苯胺/二维过渡金属二硫属化物复合材料是用于氨气检测应用的合适材料。
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