Chu Cheng-Shane, Nugroho Sri, Ammarullah Muhammad Imam
Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas Padang 25163 West Sumatra Indonesia.
Department of Mechanical Engineering, Ming Chi University of Technology New Taipei City 24301 Taiwan.
RSC Adv. 2024 Dec 2;14(51):38135-38145. doi: 10.1039/d4ra07017h. eCollection 2024 Nov 25.
Developing efficient and reliable gas sensors for the simultaneous detection of multiple gases is paramount in various fields, specifically healthcare, biological, and biomedical applications. In this study, we present a novel ratiometric optical dual gas sensor based on perovskite quantum dots (PQDs) to detect nitric oxide and oxygen simultaneously. All dye molecules were excited using a 405 nm LED in the experimental setup. The results obtained from the experiments reveal that both the optical NO and O sensors exhibit linear Stern-Volmer plots, and the sensitivities observed for NO and O sensors were approximately 2.4 and 2.8, respectively. The response and recovery times of the optical NO sensor are 67 s and 69 s, respectively. O sensor response and recovery times are 66 s and 68 s, respectively. In this work, the ratiometric optical dual gas sensing approach suppressed the effects of spurious fluctuations in the intensity of external and excitation sources.
开发高效可靠的用于同时检测多种气体的气体传感器在各个领域都至关重要，特别是在医疗保健、生物和生物医学应用中。在本研究中，我们提出了一种基于钙钛矿量子点（PQD）的新型比率光学双气体传感器，用于同时检测一氧化氮和氧气。在实验装置中，所有染料分子均使用405 nm发光二极管进行激发。实验结果表明，光学NO和O传感器均呈现线性斯特恩-沃尔默曲线，并且观察到的NO和O传感器的灵敏度分别约为2.4和2.8。光学NO传感器的响应时间和恢复时间分别为67 s和69 s。O传感器的响应时间和恢复时间分别为66 s和68 s。在这项工作中，比率光学双气体传感方法抑制了外部和激发源强度的杂散波动的影响。
