Low-temperature hydrogenation of diamond nanoparticles using diffuse coplanar surface barrier discharge at atmospheric pressure

0454760 - FZÚ 2016 RIV DE eng J - Journal Article
Kromka, Alexander - Čech, J. - Kozak, Halyna - Artemenko, Anna - Ižák, Tibor - Čermák, Jan - Rezek, Bohuslav - Černák, M.
Low-temperature hydrogenation of diamond nanoparticles using diffuse coplanar surface barrier discharge at atmospheric pressure.
Physica Status Solidi B. Roč. 252, č. 11 (2015), s. 2602-2607. ISSN 0370-1972. E-ISSN 1521-3951
R&D Projects: GA ČR(CZ) GBP108/12/G108
Institutional support: RVO:68378271
Keywords : atmospheric plasma * diamond nanoparticles * diffuse coplanar surface barrier discharge * FTIR * XPS
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.522, year: 2015

Here, we report on a new approach for plasma-assisted diamond nanoparticles (DNPs) hydrogenation at temperatures below 100°C. As-received detonation DNPs with size about 5 nm were annealed (oxidized) in air at 450°C for 30 min to reduce non-diamond carbon content. Then the annealed DNPs were plasma treated using atmospheric-pressure diffuse coplanar surface barrier discharge in pure hydrogen at power densities of 1.8 and 3.1 W/cm2. While infrared spectra of annealed DNPs were dominated by oxygen containing functional groups, plasma-hydrogenated DNPs revealed increase of bands of C–H stretching vibrations in the region of 2800–3000 cm- 1 with only 5 min of plasma treatment. Prolonged plasma treatments up to 60 min resulted in the increase of C–H stretching vibrations and a decrease of C–O–C groups in the spectral region of 1000–1300 cm-1.
Permanent Link: http://hdl.handle.net/11104/0255498