Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn3O4 Interfaces

Lorenzo Bigiani, Dario Zappa, Davide Barreca, Alberto Gasparotto, Cinzia Sada, Gloria Tabacchi, Ettore Fois, Elisabetta Comini, Chiara Maccato
  • ACS Applied Materials & Interfaces, June 2019, American Chemical Society (ACS)
  • DOI: 10.1021/acsami.9b04875

Efficient sensors for chemical warfare agents

What is it about?

Chemical warfare agents put at stake human life and global safety. These compounds are extremely toxic, and their efficient detection is crucial. We present a new sensor, based on manganese oxide and gold nanoparticles, which has ultra-low detection limits and impressive selectivity towards an important simulant of the vesicant nitrogen mustard gas.

Why is it important?

The new materials have a low fabrication cost and remarkable sensing capabilities. The reason of their impressive performances in the detection of the mustard gas simulant is that the target molecule is anchored to both manganese oxide and gold.

Perspectives

Gloria Tabacchi
university of insubria

We showed that manganese oxide systems functionalized with noble metal nanoparticles have remarkable capabilities for gas-sensing applications. We explained the molecular origin of these outstanding performances. These findings could open the way to highly efficient gas sensors based on metal oxides and metal nanoparticles. As a future perspective, it would be important to investigate the long-term stability and the effect of humidity on the performances of the device.

Read Publication

http://dx.doi.org/10.1021/acsami.9b04875

The following have contributed to this page: Gloria Tabacchi