期刊
MACROMOLECULAR RESEARCH
卷 29, 期 6, 页码 418-422出版社
POLYMER SOC KOREA
DOI: 10.1007/s13233-021-9049-9
关键词
single-walled carbon nanotube-polypyrrole nanocomposite; ammonia gas sensor; low-concentration; humidity stable; room temperature
资金
- Korea Foundation - Korean Government [KRF2017R1D1A1B03031246]
- LG Japan Lab. Inc.
The nanocomposite with bead necklace-like structure was synthesized by simple emulsion polymerization, showing high electrical conductivity and sensitivity to ammonia gas. It maintained stable sensitivity even under high humidity conditions.
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 mu m, 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 similar to 70% RH (relative humidity).
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