Abstract
We present a scalable, single-step, non-thermal plasma synthesis technique for the growth of sub-5 nm, hydrogenated amorphous carbon (a-C:H) coated 3C-SiC nanoparticles (NPs). In a tubular flow reactor, we first nucleate and grow c-Si NPs upstream in a SiH4/Ar plasma. These c-Si NPs are then transported by gas flow to a downstream C2H2/Ar plasma, and carburized in-flight by carbon-containing radicals and ions to 3C-SiC NPs. X-ray diffraction and transmission electron microscopy indicate an NP size of ~4 nm. X-ray photoelectron spectroscopy analysis confirms that the c-Si NPs are completely carburized to 3C-SiC. Fourier transform infrared spectroscopy shows that the surface of the 3C-SiC NPs is coated with a-C:H with some alkenyl termination, which can facilitate further solution-based surface functionalization for biomedical applications.
Original language | English |
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Article number | 015019 |
Number of pages | 9 |
Journal | Materials Research Express |
Volume | 2 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2015 |
Keywords
- 3C-SiC nanoparticles
- non-thermal plasma
- fluorescent markers