Synthesis of Silicon and Silicon Carbide Nanoparticles by Pulsed Electrical Discharges in Dielectric Liquids
KAUST Grant NumberOSR-2020-CPF-1975.37
Online Publication Date2021-09-07
Print Publication Date2021-11
Embargo End Date2022-09-07
Permanent link to this recordhttp://hdl.handle.net/10754/671166
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AbstractSilicon carbide (SiC) has been widely used in many applications, which require high mechanical endurance or high electrical resistance. It also serves as a basic material for light emitting diodes. Here, we present an in-liquid plasma method to produce SiC nanoparticles. A sustained spark-discharge in a dielectric liquid, which is energized by a nanosecond pulsed power supply, is established for the synthesis. To provide Si and C, we employed graphite and silicon as electrodes and cyclohexane (CHX) and tetramethylsilane (TMS) as dielectric liquids. For a reasonable comparison, we tested various combinations of electrode and liquid, namely Si-to-C in CHX, Si-to-Si in CHX, and C-to-C in TMS. We found that discharges in CHX produce Si particles encapsulated in C-shell and Si nanoparticles in C-matrix. Meanwhile, discharges in TMS consistently produce SiC nanoparticles with an average size of ~ 10 nm, regardless of the electrode material.
CitationHamdan, A., Abiad, D. E., & Cha, M. S. (2021). Synthesis of Silicon and Silicon Carbide Nanoparticles by Pulsed Electrical Discharges in Dielectric Liquids. Plasma Chemistry and Plasma Processing. doi:10.1007/s11090-021-10205-3
SponsorsThis publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2020-CPF-1975.37. The authors thank the Fonds de Recherche du Québec–Nature et Technologie (FRQ-NT) and the Canada Foundation for Innovation (CFI) for funding the research infrastructure.
PublisherSpringer Science and Business Media LLC