详细信息
Polyaniline-based room temperature ammonia gas sensor employing hybrid organic-inorganic substrate ( SCI-EXPANDED收录 EI收录) 被引量:8
文献类型:期刊文献
英文题名:Polyaniline-based room temperature ammonia gas sensor employing hybrid organic-inorganic substrate
作者:Zhang, Tong[1];Li, Wen[1];Shi, Yanting[1];Li, Chengpeng[1]
机构:[1]Guangdong Ocean Univ, Sch Chem & Environm Sci, Zhanjiang, Peoples R China
年份:2022
卷号:288
外文期刊名:MATERIALS CHEMISTRY AND PHYSICS
收录:SCI-EXPANDED(收录号:WOS:000826469900001)、、EI(收录号:20222612270133)、Scopus(收录号:2-s2.0-85132503424)、WOS
基金:Acknowledgements This work was financially supported by the Guangdong Province Regional Joint Fund-Youth Fund Project (Project No. 2021A1515110597) and the Fundamental Research Funds of Guang-dong Ocean University (Project No. 060302122103) .
语种:英文
外文关键词:Substratematerial; Organic-inorganichybrid; Polyaniline; Gassensor
外文摘要:Air pollution poses a serious threat to public health, and gas sensors for detection of the pollution has gained great attention over the past decades. In this work, a novel idea based on the substrate material integrated by structure and function was built to prepare NH3 sensor with an improving sensing properties. Hybrid organic-inorganic sol gel with methacryloxy and epoxy groups was first synthesized. A hybrid organic-inorganic substrate was then prepared based on continuous condensation, radical polymerization and anionic polymerization. The thermal stability and microstructural of the hybrid substrate were studied and the results indicated that the hybrid has excellent thermal and structural stability. Then, polyaniline (PANI) was directly loaded on the hybrid substrate due to hydrogen bonding though a facile in-situ polymerization method to fabricate a PANI/ hybrid nanocomposite for NH3 sensing. The hydroxyl groups generated from the epoxide ring-open reaction and silane hydrolysis condensation contribute to improve the sensing properties. This sensor showed superior selectivity and reproducibility to 50 ppm NH3 at room temperature. The low detection limit towards NH3 at room temperature can reach 1 ppm. This strategy may provide a promising and straightforward method in gas sensing electronics at room temperature.
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