Bead Necklace-Shaped Single Walled Carbon Nanotube-Polypyrrole Nanocomposites for Ammonia Gas Sensor
| Autor: | Jun-Ho Byeon, Wen Xuan Du, Masaki Takada, Sungmin Kang, Jin-Yeol Kim |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics General Chemical Engineering Organic Chemistry Nanochemistry Emulsion polymerization Nanoparticle Carbon nanotube Polypyrrole law.invention chemistry.chemical_compound Chemical engineering chemistry law Materials Chemistry Reactivity (chemistry) Relative humidity |
| Zdroj: | Macromolecular Research. 29:418-422 |
| ISSN: | 2092-7673 1598-5032 |
| DOI: | 10.1007/s13233-021-9049-9 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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