Abstract
A novel high stability hydrogen sensor based on a Pt/WO3 coated single-mode tapered-no-core single-mode (STNCS) fiber interferometer is proposed and experimentally studied. The STNCS structure is treated by (3-Aminopropyl) triethoxysilane (APTES) and then coated with Pt/WO3 nanorods. Compared to the traditional method of using poly (dimethylsiloxane) (PDMS) to adhere Pt/WO3 nanorods on the fiber surface, the APTES modified fiber forms strong covalent bonds with Pt/WO3 with stronger adhesion to the fiber surface, resulting in improved long-term stability. Experimental results show that the sensitivity of the sensor varies from -31.05 nm/% to -4.30 nm/% as the hydrogen concentration increases from 0 to 1.04%. The sensor also demonstrates good reproducibility, longer term stability and repeatability.
Original language | English |
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Article number | 134268 |
Number of pages | 8 |
Journal | Sensors and Actuators B: Chemical |
Volume | 393 |
Early online date | 7 Jul 2023 |
DOIs | |
Publication status | Published - 15 Oct 2023 |
Keywords
- Fiber interferometer
- Hydrogen sensor
- Pt-loaded WO