The elementary processes during the fixation of nitrogen by plasma catalysis are studied in a low-pressure plasma experiment with N$2$ and O$_2$ as source gases. The formation of surface groups on an iron oxide foil is monitored with infrared reflection absorption spectroscopy. Surface nitrates (NO$_3^-$) are formed when the substrate is exposed to a 1:1 N$_2$:O$_2$ plasma, as well as N$_2$O(g), NO(g), NO$_2$(g), and O$_3$(g) in the gas phase. It is postulated that NO${1,2}$(g) species created by the plasma, adsorb at the surface and create these nitrates. This constitutes an intermediate step for nitrogen oxidation by plasma catalysis.
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Release Date | 2025-09-17 |
Identifier | edcef9e8-ec1e-400a-b06e-2535579fcf46 |
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Contact Name | Steijn Vervloedt |
Plasma Target Properties | Iron foil |
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Public Access Level | Public |
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