利用鈀奈米粒子修飾聚吡咯薄膜製備可撓式氫氣感測器

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题名:	利用鈀奈米粒子修飾聚吡咯薄膜製備可撓式氫氣感測器 Fabrication of a flexible H2 sensor based on Pd nanoparticles modified polypyrrole films
作者:	廖信龍
贡献者:	化學系應用化學碩士班
关键词:	聚吡咯薄膜 polypyrrole films
日期:	2016-06
上传时间:	2016-08-16 09:40:01 (UTC+8)
摘要:	本研究是利用層接式自組裝法在可撓式基板上製備鈀奈米粒子複合聚吡咯薄膜，依觀察顯示，將氯化鈀聚吡咯薄膜還原成鈀奈米粒子/聚吡咯薄膜，鈀奈米粒子會複合於聚吡咯表面上，本研究說明鈀奈米粒子多寡將會影響整個感測元件的靈敏度及穩定性，並且藉由鈀奈米粒子提供催化活性使聚吡咯膜薄膜對於H2氣體分子有更佳的感度。由鈀奈米粒子/聚吡咯薄膜所製備的可撓式氫氣感測器在室溫下具有很高的感度、良好的穩定性及可撓性。對於H2而言，鈀奈米粒子複合聚吡咯薄膜聚比鉑奈米粒子複合聚吡咯薄膜具有更高反應性。 Novel flexible H2 gas sensors were fabricated by self-assembling the Pd-based complex and polypyrrole (PPy) thin films layer-by-layer on a plastic substrate and then reducing in-situ Pd-based complex thin film to a Pd-PPy thin film. Microstructural observations revealed that Pd nanoparticles (Pd NPs) formed on the surface of the PPy film. The effect of the amount of decorated Pd NPs on the response and stability of the Pd NPs-PPy thin film was investigated. The response of the PPy thin film was improved by the Pd NPs, supplying catalytically active sites for H2 gas molecules. The flexible H2 sensor that was made of Pd NPs-PPy thin film had a high performance with strongest response, good stability and high flexibility at room temperature. The flexible H2 gas sensor exhibited a strong response that was greater than that of sensor that was made of Pt-PPy at room temperature.
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