Loading...
Please wait, while we are loading the content...
Conductive Polymer Composites for Hydrogen Sulphide Sensors Working at Sub-PPM Level and Room Temperature
| Content Provider | MDPI |
|---|---|
| Author | Duc, Caroline Boukhenane, Mohamed Lamine Fagniez, Thomas Khouchaf, Lahcen Redon, Nathalie Wojkiewicz, Jean-Luc |
| Copyright Year | 2021 |
| Description | 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. |
| Starting Page | 6529 |
| e-ISSN | 14248220 |
| DOI | 10.3390/s21196529 |
| Journal | Sensors |
| Issue Number | 19 |
| Volume Number | 21 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-09-30 |
| Access Restriction | Open |
| Subject Keyword | Sensors Gas Sensing Hydrogen Sulphide Conductive Polymer Resistive Sensor Hybrid Sensors |
| Content Type | Text |
| Resource Type | Article |
