Design, fabrication, and characterization of low-power gas sensors based on organic-inorganic nano-composite

作者: Ayah F.S. Abu-Hani , Falah Awwad , Yaser E. Greish , Ahmad I. Ayesh , Saleh T. Mahmoud

DOI: 10.1016/J.ORGEL.2016.12.050

关键词:

摘要: Abstract Low-power and selective H2S gas sensors based on tungsten oxide (WO3) nanoparticles (NPs) embedded in organic polymer membranes are presented this study. WO3 NPs were synthesized using the sol-gel method. Polymer solutions consisting of poly-vinyl-alcohol (PVA) ionic liquid (IL) doped with NPs. Then, casted to obtain flexible (200 μm thickness). The (PVA-IL-WO3 membranes) tested investigate their sensing performance by measuring electrical current response signals at different operating temperatures. result revealed that best for all was obtained 80 °C, yet a reasonable noticed low temperature 20 °C. As result, power consumed heat up sensor is reduced almost 89%. detection limit 10 ppm results showed fast 19.1 ± 3.4 s. Moreover, these exhibited excellent reproducibility stability, identified be H2S. In addition aforementioned qualities, characterized ease fabrication, flexibility, cost. Due characteristics, promising materials hazardous applications.

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