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.
- 3C-SiC nanoparticles
- non-thermal plasma
- fluorescent markers
Chaukulkar, R. P., de Peuter, K., Ghodes, J. A., Pylypenko, S., Cloud, J. E., Yang, Y., ... Agarwal, S. (2015). Single-step non-thermal plasma synthesis of 3C-SiC nanoparticles. Materials Research Express, 2(1), . https://doi.org/10.1088/2053-1591/2/1/015019