Ando Masanori, Biju Vasudevanpillai, Shigeri Yasushi
Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST).
Research Institute for Electronic Science and Graduate School of Environmental Science, Hokkaido University.
Anal Sci. 2018;34(3):263-271. doi: 10.2116/analsci.34.263.
Ozone (O) gas is widely used as a strong oxidizing agent for many purposes, such as the decomposition/removal of organic contaminants and photoresist, and the deodorization/disinfection of air and water. However, ozone is highly toxic to the human body when the air concentration exceeds about 1 ppm. Therefore, there is increasing demand for simple, sensitive, reliable, and cost-effective techniques for sensing ozone gas. This article describes the features, advantages, and disadvantages of the available, practical techniques for sensing ozone gas in ambient air. The advantages of optical gas sensors as next-generation sensors is specifically introduced. The features of photoluminescent, semiconductor nanoparticles (quantum dots, QDs) as bright phosphors with the potential for various applications is further explored. Lastly, recent research results demonstrating the ozone sensitivity of photoluminescent CdSe-based core-shell quantum dots are presented. These results strongly suggest that optical ozone sensing using photoluminescent quantum dots is a promising technique.
臭氧（O₃）气体作为一种强氧化剂被广泛应用于多种用途，例如分解/去除有机污染物和光刻胶，以及空气和水的除臭/消毒。然而，当空气中臭氧浓度超过约1 ppm时，它对人体具有高毒性。因此，对用于检测臭氧气体的简单、灵敏、可靠且经济高效的技术的需求日益增加。本文描述了用于检测环境空气中臭氧气体的现有实用技术的特点、优点和缺点。特别介绍了光学气体传感器作为下一代传感器的优点。进一步探讨了作为具有各种应用潜力的明亮磷光体的光致发光半导体纳米颗粒（量子点，QDs）的特点。最后，展示了近期证明基于光致发光CdSe的核壳量子点对臭氧敏感性的研究结果。这些结果有力地表明，使用光致发光量子点进行光学臭氧传感是一项很有前景的技术。
