Randomized trial explores growth efficiency of single-walled carbon nanotubes using iron-cobalt alloys, indicating significant implications for nanotechnology.
Key Points
The study investigates how different iron-cobalt alloy compositions affect the growth of single-walled carbon nanotubes (SWCNTs) during chemical vapor deposition.
Conducted chemical vapor deposition experiments using zeolite-supported SWCNTs.
Employed spectroscopy techniques and molecular dynamics simulations to analyze chirality-specific growth efficiency.
Developed a phase diagram to illustrate composition-dependent growth trends.
Pure Co showed the highest activity at 600 °C for (6,5) and (7,5) SWCNTs.
The Fe0.75Co0.25 alloy yielded larger-diameter SWCNTs (0.9-1.1 nm) at 850 °C.
TEM analysis revealed small, uniform nanoparticles with Co-rich surfaces correlate with higher yields.