Abstract
Nanostructured materials synthesized by the hydrothermal and thermal reduction process were tested to detect the dimethyl methylphosphonate (DMMP) as a simulant for chemical warfare agents. Manganese oxide nitrogen-doped graphene oxide with polypyrrole (MnO2@NGO/PPy) exhibited the sensitivity of 51 Hz for 25 ppm of DMMP and showed the selectivity of 1.26 Hz/ppm. Nitrogen-doped multi-walled carbon nanotube (N-MWCNT) demonstrated good linearity with a correlation coefficient of 0.997. A comparison between a surface acoustic wave and quartz crystal microbalance sensor exhibited more than 100-times higher sensitivity of SAW sensor than QCM sensor.
Original language | English |
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Article number | 648 |
Journal | Micromachines |
Volume | 12 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2021 |
Keywords
- Chemical warfare agent (CWAs)
- Dimethyl methylphosphonate (DMMP)
- Quartz crystal microbalance (QCM)
- Surface acoustic wave (SAW)
- Volatile compounds (VOCs)