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- W2155190395 abstract "• A flexible H 2 S gas sensor by incorporating SWCNTs decorated with Cu NPs as sensitive material. • A fast response and a recovery time of ∼10 s and ∼15 s, respectively, are obtained for 5 ppm gas. • Response of flexible sensors upon exposure to 20 ppm H 2 S is acquired with a bending radius of 7.8 mm. • Ab initio simulations are performed to explore the underlying H 2 S sensing mechanism of sensors. We present sensitive flexible H 2 S gas sensors operating at room temperature based on Cu-SWCNTs. SWCNTs are decorated with metallic cluster of Cu nanoparticles (NPs) by employing a reduction chemical process and are spin coated on a polyethylene terephthalate (PET) flexible substrate for achieving facile and cheap sensors. Cu-SWCNTs-based sensors show remarkable responses upon exposure to various concentrations of H 2 S gas in the range of 5 ppm to 150 ppm. A fast response time and a recovery time of ∼10 s and ∼15 s, respectively, are obtained for 5 ppm of H 2 S. Resistance modulation – without any significant degradation – is observed for bending radii larger than 4 mm. The sensors show reproducible response upon exposure to larger than 20 ppm of H 2 S and bending radii larger than 7.8 mm. Ab initio simulations are performed to explore the underlying H 2 S sensing mechanism of Cu-SWCNTs. In agreement with our experiments, theoretical analyses indicated that the decoration of SWCNTs with Cu atoms enhances the sensitivity of SWCNTs for H 2 S gas detection." @default.
- W2155190395 created "2016-06-24" @default.
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- W2155190395 date "2015-04-01" @default.
- W2155190395 modified "2023-10-03" @default.
- W2155190395 title "High sensitive and selective flexible H2S gas sensors based on Cu nanoparticle decorated SWCNTs" @default.
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- W2155190395 doi "https://doi.org/10.1016/j.snb.2014.12.086" @default.
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