Abstract
A room temperature (RT) H2S gas sensor based on organic–inorganic nanocomposites has been developed by incorporating zinc oxide (ZnO) nanoparticles (NPs) into a conductivity-controlled organic polymer matrix. A homogeneous solution containing poly (vinyl alcohol) (PVA) and ionic liquid (IL) and further doped with ZnO NPs was used for the fabrication of a flexible membrane (approx. 200 µm in thickness). The sensor was assessed for its performance against hazardous gases at RT (23◦C). The obtained sensor exhibited good sensitivity, with a detection limit of 15 ppm, and a fast time response (24 ± 3 s) toward H2S gas. The sensor also showed excellent repeatability, long-term stability and selectivity toward H2S gas among other test gases. Furthermore, the sensor depicted a high flexibility, low cost, easy fabrication and low power consumption, thus holding great promise for flexible electronic gas sensors.
Original language | English |
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Article number | 2037 |
Journal | Nanomaterials |
Volume | 12 |
Issue number | 12 |
DOIs | |
Publication status | Published - Jun 1 2022 |
Keywords
- HS sensor
- ZnO NPs
- metal oxide semiconductor
- organic polymer
- organic-inorganic nanocomposite
ASJC Scopus subject areas
- General Chemical Engineering
- General Materials Science