Atmospheric plasma treatment of detonation nanodiamonds in water

0471054 - FZÚ 2017 RIV CZ eng A - Abstrakt
Štenclová, Pavla - Fantova, V. - Artemenko, Anna - Jirásek, Vít - Jíra, Jaroslav - Rezek, Bohuslav - Kromka, Alexander
Atmospheric plasma treatment of detonation nanodiamonds in water.
Development of Materials Science in Research and Education. Book of Abstracts of the 26th Joint Seminar. Praha: Institute of Physics of the Czech Academy of Sciences, v. v. i., 2016 - (Kožíšek, Z.; Král, R.; Zemenová, P.). s. 42. ISBN 978-80-905962-4-5.
[Joint Seminar Development of Materials Science in Research and Education /26./. 29.08.2016-02.09.2016, Pavlov]
Grant CEP: GA ČR GA15-01687S
Institucionální podpora: RVO:68378271
Klíčová slova: detonation nanodiamonds * atmospheric plasma * FTIR spectroscopy
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

A novel method for modifying DNDs suspended in water by DC atmospheric plasma sustained above the water suspension was reported. DNDs were used in as-received form (labeled as H-DND) or after air-annealing (labeled as O-DND). The influence of applied voltage (10 and 15 kV) and treatment duration (1, 5 and 10 minutes) on the surface chemistry of DNDs was evaluated by FTIR spectroscopy. Plasma treated H-DND particles reveal i) decreasing ratio of CH3 to CH2 surface groups; ii) disappearance of double bonds present in the graphitic shell of the particles and iii) re-arrangement of residual oxygen-containing moieties on the particle surface. In contrast to H-DNDs, the chemical state of O-DND surface was not affected by plasma treatment. In this case, newly formed doublet at 1580 and 1604 cm-1 was detected whose origin is not clear yet. Complementary XPS and Raman measurements did not reflect any changes of DNDs after the plasma treatment.
Trvalý link: http://hdl.handle.net/11104/0268520