2015
Low-Temperature hydrogenation of diamond nanoparticles using diffuse coplanar surface barrier discharge at atmospheric pressure
KROMKA, Alexander, Jan ČECH, Halyna KOZAK, Anna ARTEMENKO, Tibor IŽÁK et. al.Základní údaje
Originální název
Low-Temperature hydrogenation of diamond nanoparticles using diffuse coplanar surface barrier discharge at atmospheric pressure
Autoři
KROMKA, Alexander (703 Slovensko), Jan ČECH (203 Česká republika, garant, domácí), Halyna KOZAK (804 Ukrajina), Anna ARTEMENKO (804 Ukrajina), Tibor IŽÁK (203 Česká republika), Jan ČERMÁK (203 Česká republika), Bohuslav REZEK (203 Česká republika) a Mirko ČERNÁK (703 Slovensko, domácí)
Vydání
physica status solidi (b), Berlin, J. Wiley, 2015, 0370-1972
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.522
Kód RIV
RIV/00216224:14310/15:00083402
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000364690400042
Klíčová slova anglicky
atmospheric plasma;diamond nanoparticles;diffuse coplanar surface barrier discharge;Fourier transform infrared spectroscopy;X-ray photoelectron spectroscopy
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 14. 1. 2016 09:19, Mgr. Jan Čech, Ph.D.
Anotace
V originále
Due to an extraordinary combination of intrinsic properties of diamond nanoparticles (DNPs), there is an increased demand for their usage in various areas. While a broad range of surface termination is often done by wet-chemical, UV-irradiation or plasma treatments, DNPs hydrogenation is still an open issue. Thermal annealing or microwave plasma treatment, both known as high-temperature processes, do not offer satisfactory solutions for DNPs hydrogenation. Here, we report on a new approach for plasma-assisted 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 powers 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.
Návaznosti
ED2.1.00/03.0086, projekt VaV |
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LO1411, projekt VaV |
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