Wang, Fei and Yeap, Swee Pin and Choon, Yoong Cheok and Ang, Chun Kit and Saidur, Rahman * and Lin, Shiwei and Leong, Kah Hon and Dai, Chaomeng (2025) Observing the antagonistic effect in the Graphene-Polyaniline hybridization and its correlation with CO2 sensing behaviour. Polymer-Plastics Technology and Materials, 65 (1). pp. 177-195.
Full text not available from this repository. (Request a copy)Abstract
Conventional gas sensors often require bulky, costly instruments, limiting their practical use in real-time environmental monitoring. This study presents a flexible, low-cost CO2 sensor using brush-coated nanoparticle films on weighing paper, comparing pristine rGO, PANI, and rGO/PANI hybrids (1:3, 1:1, 3:1). Initial resistance varied widely, with PANI exhibiting the highest value (6.00 ± 1.21 MΩ), while hybrids and rGO remained below 1.20 MΩ. Upon air exposure, rGO showed a significant resistance increase (+32.26%), whereas PANI dropped (−6.67%); hybrid sensors responded moderately. In CO2 sensing, PANI demonstrated the strongest response (+142.62%), followed by rGO/PANI of 1:3 ratio at +26.44% and rGO/PANI of 1:1 ratio at +16.87%, while rGO and rGO/PANI of 3:1 ratio showed negative responses of −29.13% and −17.09%, respectively. These results reveal that hybridization does not always enhance performance. An offset effect from mixed conduction types can reduce sensitivity. These findings unlock new insights into the complex interplay of nanomaterials in flexible sensors, paving the way for optimized, high-performance devices tailored for practical environmental applications.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | antagonistic effect; carbon dioxide; flexible gas sensor; polyaniline; reduced graphene oxide |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Sunway University > Faculty of Engineering and Technology [formerly School of Engineering and Technology until 14 November 2025; School of Science and Technology until 2020] > Research Centre for Nano-Materials and Energy Technology |
| Depositing User: | Ms Yong Yee Chan |
| Related URLs: | |
| Date Deposited: | 23 Apr 2026 10:32 |
| Last Modified: | 24 Apr 2026 02:10 |
| URI: | http://repository.sunway.edu.my/id/eprint/3311 |
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