Publication details
High-Performance Ammonia Gas Sensors Based on Plasma Treated Carbon Nanostructures
| Authors | |
|---|---|
| Year of publication | 2017 |
| Type | Article in Periodical |
| Magazine / Source | IEEE Sensors Journal |
| MU Faculty or unit | |
| Citation | |
| Web | web článku |
| Doi | http://dx.doi.org/10.1109/JSEN.2017.2656122 |
| Field | Plasma physics |
| Keywords | Ammonia; carbon nanostructures; gas sensor; plasma treatment |
| Attached files | |
| Description | Sensors based on multi-walled carbon nanotubes were functionalized by oxygen plasma treatment and plasma co-polymerization of maleic anhydride and acetylene, obtaining core-shell carbon nanopartices covered by functional groups. The active nanostructured carbonaceous material was investigated by scanning electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. It was confirmed that plasma treatment increases the content of surface functional groups. The sensing properties of the functionalized material were measured in the range of 10-1000 ppm of NH3 at room temperature. The plasma treated sensor showed an extremely high response of 22.5%, 27.9%, and 31.4% to 100 ppm, 250 ppm, and 500 ppm of NH3, respectively. It was shown that the nature of NH3 adsorption on the surface of functionalized nanostructured carbon material is physical adsorption. |
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