Abstract
The nanocomposite of bead necklace-like structure in which single stands of single-walled carbon nanotube (SWCNT) are impregnated in several polypyrrole (PPy)/phenylalanine (PA), PPy@PA, nanoparticles, with an average bead diameter of 80 nm and SWCNT length of 5 µm, as a sensing material for detecting ammonia gas, was synthesized by simple emulsion polymerization. The synthesized nanocomposite showed an electrical conductivity more than 5 times higher than that of PPy alone with a selective reactivity to ammonia gas. In addition, it exhibited a high sensitivity of less than 100 ppb at room temperature and was not significantly affected by the sensitivity even under the humidity conditions of 0 ∼70% RH (relative humidity).
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Acknowledgments
This work was financially supported in part by the Korea Foundation Grant funded by the Korean Government (KRF-2017R1D1A1B03031246). All authors are thanks to the LG Japan Lab. Inc. for providing the evaluation facility and some funding.
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Du, W.X., Byeon, JH., Kang, S. et al. Bead Necklace-Shaped Single Walled Carbon Nanotube-Polypyrrole Nanocomposites for Ammonia Gas Sensor. Macromol. Res. 29, 418–422 (2021). https://doi.org/10.1007/s13233-021-9049-9
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DOI: https://doi.org/10.1007/s13233-021-9049-9