Surface chemistry of water dispersed detonation nanodiamonds modified by atmospheric DC plasma afterglow

0486972 - FZÚ 2018 RIV BE eng A - Abstract
Štenclová, Pavla - Čeledová, L. - Artemenko, Anna - Jirásek, Vít - Jíra, Jaroslav - Rezek, Bohuslav - Kromka, Alexander
Surface chemistry of water dispersed detonation nanodiamonds modified by atmospheric DC plasma afterglow.
Hasselt diamond workshop - SBDD XXII. Hasselt: SBDD XXII, 2017.
[Hasselt diamond workshop - SBDD XXII. 08.03.2017-10.03.2017, Hasselt]
R&D Projects: GA ČR GA15-01687S
Institutional support: RVO:68378271
Keywords : nanodiamond
OECD category: Materials engineering

In this contribution we report on a low-cost method for modifying DNDs dispersed in water by atmospheric DC plasma afterglow. DNDs were used either in as-received form (labeled as H-DND) or after air-annealing at 450 °C for 30 minutes (labeled as O-DND). The influence of applied voltage and thus the type of discharge (corona discharge at 10 or transient spark discharge at 15 kV) and treatment duration (1, 5 and 10 minutes) on the surface chemistry of DNDs was evaluated by Infrared spectroscopy (IR). We observe interesting changes on both oxygen- and hydrogen- containing surface functional groups on colloidal H-DNDs by the atmospheric DC plasma afterglow. Origins and implications of these changes will be discussed.

Permanent Link: http://hdl.handle.net/11104/0281680