| 水热法制备MoO3-GQDs的三甲胺气敏性能 | |
| Trimethylamine Vapour Sensing Properties of MoO3-GQDs Prepared by Hydrothermal Method | |
| 摘要: 采用水热法制备了一系列具有不同碳量子点（GQDs）含量的MoO3-GQDs纳米复合材料，利用X射线衍射、扫描电子显微镜、透射电子显微镜、FTIR等对MoO3-GQDs复合材料进行了表征，研究了其气敏性能。结果表明，复合材料中GQDs的含量对MoO3-GQDs复合材料的气敏响应和选择性有显著影响。MoO3-GQDs纳米复合材料（S-6，GQDs悬浮液的含量为6 mL）传感器在230℃时对三甲胺（TMA）表现出高的气敏响应和好的气敏选择性；该传感器对1 000 μL·L-1 TMA的响应为74.08；对1 000 μL·L-1 TMA的响应时间和恢复时间分别为73和34 s；S-6复合材料气敏传感器在230℃时可以检测到1 μL·L-1的TMA。 | |
| 关键词: 水热合成法 量子点 纳米结构 材料科学 | |
| 基金项目: 国家自然科学基金（No.61671019，61971003）资助。 | |
| Abstract: A series of MoO3-GQDs nano-composites with different amounts of graphene quantum dots (GQDs) were prepared by the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction, Scanning electron microscope, Transmission electron microscope, FTIR and so on. The gas sensing properties of MoO3-GQDs were investigated. It was found that the amount of GQDs in the composites had a great influence on the gas response and gas sensing selectivity of the nano-composites. The sensor based on the MoO3-GQDs nano-composite (S-6, the amount of GQDs suspension was 6.0 mL) showed high response and good gas sensing selectivity to TMA at 230℃; the response of the sensor to 1 000 μL·L-1 TMA was 74.08; the response time and recovery time to 1 000 μL·L-1 TMA were 73 and 34 s, respectively; the sensor based on MoO3-GQDs (S-6) composite could detect 1 μL·L-1 TMA vapor at 230℃. | |
| Keywords: hydrothermal synthesis quantum dots nanostructures materials science | |
| 投稿时间：2020-06-11 修订日期：2020-12-13 | |
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| Ali Akhtar,戴芃,储向峰,梁士明,何利芳.水热法制备MoO3-GQDs的三甲胺气敏性能[J].无机化学学报,2021,37(2):351-360. | |
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