Highly Selective Organic Gas Sensor via Surface-Functionalized MXene–Gas Interactions
발표자
고인화 (인천대학교)
연구책임자
박영돈 (인천대학교)
초록
내용
Organic gas sensors are gaining attention for use in environmental monitoring and industrial safety due to their flexibility, light weight, and low-cost processing. However, their limited sensitivity has driven efforts to develop hybrid systems with functional materials to improve performance. MXene has emerged as a promising gas-active material due to its excellent conductivity and high surface functionalization potential. In this study, we enhanced the performance of organic gas sensors by blending surface-modified MXene with poly(3-hexylthiophene) (P3HT). MXene was functionalized with amine and thiol groups using a simple silanization method. N-MXene exhibited the highest response to nitrogen dioxide (NO₂), while S-MXene responded most strongly to sulfur dioxide (SO₂). Additionally, air stability tests showed that surface-functionalized MXene effectively suppressed charge trapping and oxidative reaction of the polymer film, significantly improving long-term air stability.