| 초록 |
Hydrogen sulfide (H2S) is one of the most toxic gases in the world and causes nervous system collapse and cellular respiratory disturbances. Therefore, highly sensitive and selective H2S gas sensor systems are becoming increasingly important in environmental monitoring and safety. In this report, we suggest the facile synthesis method of the Fe2O3 nanoparticles-decorated carbon nanotubes (Fe2O3@CNT) to detect H2S gas using oxidative co-polymerization (pyrrole and 3-carboxylated pyrrole) and heat treatment. The as-prepared Fe2O3@CNT-based sensor electrode is highly sensitive (as low as 1 ppm), selective and stable to H2S gas at 25°C, which shows promise in the medical diagnosis and environmental monitoring. The outstanding performance of the Fe2O3@CNT is due to the unique morphology of the nanocomposites made of Fe2O3 nanoparticles uniformly dispersed on the carbon surface without aggregation. |
