Selective real-time nitric oxide detection by functionalized zinc oxide

Chien Cheng Liu, Jan Hao Li, Cheng Chung Chang, Yu Chiang Chao, Hsin Fei Meng*, Sheng Fu Horng, Cheng Hsiung Hung, Tzu Ching Meng

*此作品的通信作者

    研究成果: 雜誌貢獻期刊論文同行評審

    19 引文 斯高帕斯(Scopus)

    摘要

    Ferriprotoporphyrin IX chloride (haemin)-functionalized Al-doped zinc oxide (ZnO) is used for nitric oxide (NO) sensing at room temperature. The devices show high selectivity to NO against CO2 and O2. There is no such selectivity without haemin. Porous ZnO film made by a polystyrene sphere template is used to provide a high surface area. In comparison with non-porous ZnO film with low surface area, both the sensitivity and the response speed of the sensor made by porous ZnO are clearly improved. NO concentration down to 1 ppm can be detected. The response time is 20 s. The sensor is reversible after purging with pure nitrogen for about 100 s. Such a device is able to detect real-time variation of NO which is a vital physiological signalling molecule.

    原文英語
    文章編號155105
    期刊Journal of Physics D: Applied Physics
    42
    發行號15
    DOIs
    出版狀態已發佈 - 2009 九月 17

    ASJC Scopus subject areas

    • 電子、光磁材料
    • 凝聚態物理學
    • 聲學與超音波
    • 表面、塗料和薄膜

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