Conductive Polymer Composites for Hydrogen Sulphide Sensors Working at Sub-PPM Level and Room Temperature
| Autor: | Mohamed Lamine Boukhenane, Caroline Duc, Jean-Luc Wojkiewicz, Thomas Fagniez, Nathalie Redon, Lahcen Khouchaf |
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| Přispěvatelé: | Unité de Mécanique de Lille - ULR 7512 (UML), Université de Lille, Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Nord Europe), Institut Mines-Télécom [Paris] (IMT) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
gas sensing
Nanostructure Materials science Energy-dispersive X-ray spectroscopy resistive sensor 02 engineering and technology TP1-1185 010402 general chemistry 01 natural sciences Biochemistry Article Analytical Chemistry Polystyrene sulfonate chemistry.chemical_compound [SPI]Engineering Sciences [physics] PEDOT:PSS Polyaniline conductive polymer Electrical and Electronic Engineering Fourier transform infrared spectroscopy Instrumentation chemistry.chemical_classification Conductive polymer hybrid sensors Chemical technology Polymer 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences chemistry Chemical engineering [SDE]Environmental Sciences 0210 nano-technology hydrogen sulphide |
| Zdroj: | Sensors Sensors, 2021, 21 (19), pp.6529. ⟨10.3390/s21196529⟩ Sensors, MDPI, 2021, 21 (19), pp.6529. ⟨10.3390/s21196529⟩ Volume 21 Issue 19 Sensors, Vol 21, Iss 6529, p 6529 (2021) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | Hybrid composites based on tin chloride and the conductive polymers, polyaniline (PAni) and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), were integrated into high-performance hydrogen sulphide (H2S) gas sensors working at room temperature. The morphology and chemical properties were studied by scanning and transmission electron microscopy (SEM, TEM), energy dispersive spectroscopy (EDS) and Fourier-transform infrared (FTIR). The composites demonstrated a slightly porous nanostructure and strong interactions between the polymers and the metal salt, which slightly dopes PAni. The hybrid sensors exhibited a very low detection limit (< 85 ppb), fast response, repeatability, reproducibility and stability over one month. Moreover, this work presents how calibration based on the derivative of the signal can give hybrid sensors the ability to quantify the concentration of targeted gas, even during continuous variation of the analyte concentration. Finally, the effect of interfering species, such as water and ammonia, is discussed. |
| Databáze: | OpenAIRE |
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