Highly sensitive hybrid nanostructures for dimethyl methyl phosphonate detection

Sanjeeb Lama, Jinuk Kim, Sivalingam Ramesh, Young Jun Lee, Jihyun Kim, Joo Hyung Kim

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

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 languageEnglish
Article number648
JournalMicromachines
Volume12
Issue number6
DOIs
StatePublished - Jun 2021

Keywords

  • Chemical warfare agent (CWAs)
  • Dimethyl methylphosphonate (DMMP)
  • Quartz crystal microbalance (QCM)
  • Surface acoustic wave (SAW)
  • Volatile compounds (VOCs)

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