Sui Lili, Ma Xin, Yang Mingrui, Yu Haixia, Wang Ping, Zhao Dan, Chen Guoli, Zhao Ming, Zhang Wenzhi, Dong Guohua
School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, P. R. China.
Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, School of Materials Science and Engineering, Anyang Institute of Technology, Anyang, 455000, P. R. China.
Mikrochim Acta. 2024 Sep 7;191(10):579. doi: 10.1007/s00604-024-06667-9.
Highly sensitive detection of nitric dioxide (NO) has recently attracted much attention due to its harmful to the human health even at a low concentration of 0.1 parts per million (ppm). Herein, InO nanoparticles (NPs) were prepared via a facile ionic liquid (IL) assisted solvothermal method with subsequent calcination and then were analyzed through the characterization of X-ray diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption-desorption techniques. Morphological characterization demonstrated that the resultant compounds were InO NPs with a diameter ranging from 20 to 30 nm. The gas sensor based on the InO NPs prepared with IL exhibited excellent NO-sensing properties in terms of fast response/recovery speed (26.6/10.0 s), high response (310.0), good repeatability and long-term stability to 10 ppm NO gas at low working temperature of 92 °C. The gas-sensing mechanism of InO NPs to NO was represented to the surface adsorption control model and the possibilities relating to the improved NO sensing performance of the InO NPs synthesized with IL-assisted were also discussed in detail.
由于二氧化氮（NO）即使在百万分之一（ppm）的低浓度下也对人体健康有害，因此对其进行高灵敏度检测最近备受关注。在此，通过简便的离子液体（IL）辅助溶剂热法制备了InO纳米颗粒（NPs），随后进行煅烧，然后通过X射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）和氮吸附-脱附技术进行分析。形态表征表明，所得化合物为直径范围为20至30nm的InO NPs。基于用IL制备的InO NPs的气体传感器在92°C的低工作温度下对10ppm NO气体表现出优异的NO传感性能，具有快速的响应/恢复速度（26.6/10.0秒）、高响应（310.0）、良好的重复性和长期稳定性。InO NPs对NO的气敏机理表现为表面吸附控制模型，还详细讨论了与IL辅助合成的InO NPs改善NO传感性能相关的可能性。
