| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials 2024
|
| Presentation Title |
Ru-promoted Co Catalysts for CVD Growth of Small-diameter Single-Wall Carbon Nanotubes Using Rapid Experimentation |
| Author(s) |
Brian Everhart, Rahul Rao, Benji Maruyama, Pavel Nikolaev, Placidus Amama |
| On-Site Speaker (Planned) |
Placidus Amama |
| Abstract Scope |
Due to the breadth of parameters that affect growth of single-wall carbon nanotubes (SWCNTs) via chemical vapor deposition, rapid experimentation is a powerful tool for investigating conditions for selective growth of small-diameter SWCNTs. Here we utilize an Autonomous Research System (ARES)—an automated, high throughput, laser-induced CVD system with in situ Raman spectral feedback—to study the roles of Ru promotion of Co catalyst and type of feedstock in the growth of small-diameter SWCNTs at different temperatures. We demonstrate through over 200 growth experiments in ARES and ex-situ multi-excitation Raman spectroscopic characterization that Ru-promoted Co catalyst nearly doubles the selectivity of small-diameter SWCNTs (diameters below 1nm) between growth temperatures of 650°C and700°C in comparison to pure Co. At elevated temperatures between 800 and 850°C, Ru stabilizes Co catalyst nanoparticles and increases the selectivity of small-diameter SWCNTs by almost a factor of three. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Copper / Nickel / Cobalt, Nanotechnology |