About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry
|
| Presentation Title |
Controlled Growth of Vertically Aligned Carbon Nanotubes Using Narrow Size-Distributed Fe-Al Bimetallic Nanoparticles |
| Author(s) |
Md Rakib Mahmud |
| On-Site Speaker (Planned) |
Md Rakib Mahmud |
| Abstract Scope |
Narrow size-distributed Fe-Al bimetallic nanoparticles have shown promising catalytic activity for growing vertically aligned carbon nanotubes (VACNTs). In this work, Fe-Al nanoparticles around 5 nm were synthesized from Fe-oleate and Al-oleate precursors using the thermal decomposition method. The optimum condition for growing VACNTs was achieved by activating discrete nanoparticles via annealing at different temperatures and times. VACNTs were then grown via chemical vapor deposition (CVD), flowing ethylene gas for one minute as the carbon source. Following optimization of the annealing parameters, a charge-driven technique was applied to assemble a monolayer of Fe-Al nanoparticles onto silicon substrates. This monolayer catalyst system was subsequently employed to achieve high-quality VACNT growth. The study highlights the critical role of nanoparticle preparation and substrate modification for better catalytic activity in directing CNT nucleation and alignment. |