Published: Jan. 1, 2024

Conductive polymer-based gas sensors are frequently utilized because of their benefits, which include affordability, good selectivity, and room-temperature detection. However, they still limited by low sensitivity, high detection limit, slow response-recovery speed. In this study, a hollow flower-shaped composite gas-sensing material was designed. MXene microspheres formed electrostatic adsorption using Polymethyl Methacrylate (PMMA) as template were used substrates, SnS2 nanosheets produced hydrothermally on the microsphere surface to form gas-sensitive materials. After calcination remove template, polyaniline (PANI) coated onto each nanosheet via in situ polymerization. The synthesized MXene@SnS2@PANI nanoflowering composites exhibited an extremely responsiveness ammonia at 25°C, limits, unique selectivity towards gas. effectively prevented two-dimensional stacking. There more active sites for since loading enhanced material's specific area. PANI moisture resistance while preventing oxidation internal When exposed 100 ppm NH3 25°C 45% relative humidity (RH), MSP-100 sensor's reaction reached 119.76%, five times that PANI. Notably, range 0%–90% RH, based grew rose, reaching peak response 215.18% 90% RH. addition, sensor had limit 1.433 prominent indicating its promising application

Language: Английский