| 초록 |
Chemical sensing based on semiconducting polymers has been largely proposed for acetone sensor, although some major technical challenges such as high operating temperature with moisture stability and reliable sensitivity to ppb levels still has remain unsolved. This work presents the development of an electrochemical sensor based on nanostructured the core-shell nanorod composites with a single-walled carbon nanotube (SWCNT) in the core and polypyrrole (PPy)/phenyl lactic acid (PLA) shells, SWCNT@PPy@PLLA, for acetone detection at room temperature. The core-shell nanorod composites were applied for acetone detection in the range of 0.05 to 5000 ppm at room temperature with humidity resistance for resistance changes proportional to acetone concentration. According to these results, the developed sensor showed reliable detection at a concentration of 50 ppb even at room temperature and have the potential to be practically applied to gas sensors. |
