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Rapid formation of diamond-like nano-carbons in a gas bubble discharge in liquid ethanol

journal contribution
posted on 2018-01-01, 00:00 authored by Frank ChenFrank Chen, Kevin Magniez, M Duchemin, N Stanford, Arun T.A., A Taylor, C S Wong, Yan Zhao, Xiujuan Dai
This work demonstrates that diamond-like nano-carbons can be rapidly grown at atmospheric pressure and near ambient temperature in Ar gas bubble discharge in liquid ethanol. The method uses a discharge between point-to-plate electrodes immersed in ethanol, with plasma being generated inside Ar gas bubbles introduced through the needle electrode. The ethanol was dissociated at the liquid/gas interface into reactive species such as C2and CH, which are the primary species responsible for diamond formation. A mixture of lonsdaleite nano-diamonds, amorphous carbon nano-spheres, and a graphitic carbon network, was formed. The rapid bubble movement distributes the reaction products almost immediately into the liquid phase, ensuring that nucleation of new material continues throughout the process. This simple, inexpensive and fast process avoids the elevated temperatures and extreme pressures of current methods.

History

Journal

Plasma chemistry and plasma processing

Volume

38

Issue

1

Pagination

75 - 87

Publisher

Springer

Location

Cham, Switzerland

ISSN

0272-4324

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2017, Springer Science+Business Media, LLC