Liu Hongda, Liu Jiongjiang, Liu Qi, Li Yinghui, Zhang Guo, He Chunying
Key Laboratory of Functional Inorganic Material Chemistry, School of Chemical Engineering and Material, Heilongjiang University, Ministry of Education, 74 Xuefu Road, Harbin 150080, China.
School of Chemical Engineering and Material, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China.
Nanomaterials (Basel). 2023 Jul 31;13(15):2220. doi: 10.3390/nano13152220.
An ethylenediamine (EDA) gas sensor based on a composite of MoO nanoribbon and reduced graphene oxide (rGO) was fabricated in this work. MoO nanoribbon/rGO composites were synthesized using a hydrothermal process. The crystal structure, morphology, and elemental composition of MoO/rGO were analyzed via XRD, FT-IR, Raman, TEM, SEM, XPS, and EPR characterization. The response value of MoO/rGO to 100 ppm ethylenediamine was 843.7 at room temperature, 1.9 times higher than that of MoO nanoribbons. The MoO/rGO sensor has a low detection limit (LOD) of 0.235 ppm, short response time (8 s), good selectivity, and long-term stability. The improved gas-sensitive performance of MoO/rGO composites is mainly due to the excellent electron transport properties of graphene, the generation of heterojunctions, the higher content of oxygen vacancies, and the large specific surface area in the composites. This study presents a new approach to efficiently and selectively detect ethylenediamine vapor with low power.
在本工作中制备了一种基于MoO纳米带与还原氧化石墨烯（rGO）复合材料的乙二胺（EDA）气体传感器。采用水热法合成了MoO纳米带/rGO复合材料。通过XRD、FT-IR、拉曼、TEM、SEM、XPS和EPR表征分析了MoO/rGO的晶体结构、形貌和元素组成。在室温下，MoO/rGO对100 ppm乙二胺的响应值为843.7，比MoO纳米带高1.9倍。MoO/rGO传感器具有0.235 ppm的低检测限（LOD）、短响应时间（8 s）、良好的选择性和长期稳定性。MoO/rGO复合材料气敏性能的提高主要归因于石墨烯优异的电子传输性能、异质结的产生、较高的氧空位含量以及复合材料中较大的比表面积。本研究提出了一种以低功耗高效、选择性检测乙二胺蒸气的新方法。
