20.500.12556/DiRROS-22673 Heterogeneous surface recombination of oxygen atoms on vertically oriented multilayer graphene sheets deposited on a metal substrate The kinetics of surface recombination of neutral oxygen atoms on nanocarbon deposited on oxidized cobalt catalyst in inductively coupled radiofrequency plasma sustained in propane in the H-mode is presented. The coefficient was measured in the range of temperatures between 300 and 800 K and pressures between 40 and 200 Pa. A deep minimum in the coefficient at 0.03–0.06 was observed and explained by a deposition of a rather smooth carbon film on the cobalt catalyst. Prolonged deposition caused the growth of perpendicularly oriented multilayer graphene sheets with the distance between the neighboring sheets around 100 nm. The large aspect ratio of the gaps, whose depth reached several micrometers after deposition time over 100 s, caused the trapping of oxygen atoms and, thus, numerous collisions with the graphene-like surface, so the coefficient increased for over an order of magnitude. The maximum coefficient over 0.5 was observed at low pressures and elevated temperatures. The evolution of the recombination coefficient was explained by the peculiarities of the binding sites for oxygen atoms on graphene surfaces. carbon nanowalls plasma oxygen chemical vapor deposition plazma kisik ogljikove nanostenske obloge para kemično nanašanje true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2025 The Authors. Neznano 2025-06-17 09:39:31 2025-06-17 09:39:31 2025-10-24 03:51:56 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 6. 6. 2025; str. 1-12 Vol. 707, [article no.] 163654 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-11-26 2025-05-27 2025-05-27 537 1873-5584 10.1016/j.apsusc.2025.163654 238540291 https://www.sciencedirect.com/science/article/pii/S0169433225013698 1 70d57b69-4b3d-11f0-bf0a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32874 RAZ_Paul_Domen_2025.pdf RAZ_Paul_Domen_2025.pdf Raziskovalni podatki so na voljo: https://doi.org/10.5281/zenodo.14203591 1 45061072908DF72543AD86B3A33C5890 229d4b9ef3036862b16c443e0fec601f6eaf16a8fa01a7a1c1c9cf771b4bd326 15eb9d7a-4b3e-11f0-bf0a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32875 Institut Jožef Stefan 0 0 0