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A flexible NO2 gas sensor based on polypyrrole/nitrogen-doped multiwall carbon nanotube operating at room temperature
Abstract
Abstract A flexible NO2 gas sensor based on a polypyrrole/nitrogen-doped multi-walled carbon nanotube (PPy/N-MWCNT) composite film was successfully prepared on PI substrates using a combined in situ self-assembly and annealing treatment method. After annealing at 350 °C, the gas sensor exhibited a high response of 24.82% ((Rg−Ra)/Ra×100%) under 5 ppm of NO2, which is 44.12 times greater than that of the unannealed sensor. The PPy/N-MWCNT gas sensor exhibited excellent repeatability, remarkable selectivity, good long-term stability, and acceptable flexibility. Furthermore, the effect of the relative humidity on the gas sensing properties was examined. The excellent gas sensing performances of the sensor were attributed to the enriched adsorption sites due to degradation of the amount of stacked PPy structures on the surface of the N-MWCNTs after the annealing treatment. The results demonstrated that PPy/N-MWCNT composite films are highly promising for potential applications in the field of NO2 gas sensing.
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Cited by
Paper-Based Sensors for Gas, Humidity, and Strain Detections: A Review
Tai, H., Duan, Z., Wang, Y., Wang, S., & Jiang, Y. (2020) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.0c06435 · Cited by 441
Self-citationDing, Q., Zhou, Z., Wang, H., Wu, Z., Tao, K., Yang, B., Xie, X., Fu, J., & Wu, J. (2023) · SmartMat · doi:10.1002/smm2.1141 · Cited by 72
Wei, Y., Wang, H., Ding, Q., Wu, Z., Zhang, H., Tao, K., Xie, X., & Wu, J. (2022) · Materials Horizons · doi:10.1039/d2mh00284a · Cited by 66
Metadata
- Authors
- Liu, B., Liu, X., Yuan, Z., Jiang, Y., Su, Y., Ma, J., & Tai, H.
- Venue
- Sensors and Actuators B: Chemical
- Publisher
- Elsevier BV
- Published
- 2019-09
- Volume
- 295
- Pages
- 86-92
- ISSN
- 0925-4005 (ISSN-L)
- OpenAlex
- W2946551649
- Cited by
- 185
- References
- 0
- FWCI
- 7.84
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A flexible NO2 gas sensor based on polypyrrole/nitrogen-doped multiwall carbon nanotube operating at room temperature. https://app.cochat.ai/papers/10.1016/j.snb.2019.05.065
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- Liu, B., Liu, X., Yuan, Z., Jiang, Y., Su, Y., Ma, J., & Tai, H. (2019). A flexible NO2 gas sensor based on polypyrrole/nitrogen-doped multiwall carbon nanotube operating at room temperature. Sensors and Actuators B: Chemical. https://doi.org/10.1016/j.snb.2019.05.065
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