| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Chemical Vapor Deposition Synthesis of 2D Refractory Metal Carbides |
| Author(s) |
Eric J. Payton, Phillisity C Neal, Jesus Acosta, Aleksey Ruditskiy, Andrea N Giordano, W. Josh Kennedy |
| On-Site Speaker (Planned) |
Eric J. Payton |
| Abstract Scope |
Top-down etching and exfoliation for synthesis of 2D refractory metal carbides (functionalized as MXenes) has been demonstrated for a large number of compositions. However, bottom-up routes including chemical vapor deposition (CVD) have been less explored. Many papers have demonstrated liquid-phase (LP) CVD of Mo2C. Cu is typically used as the liquid catalyst, though some success other catalysts have also been reported. This talk will outline the prospects of the LP-CVD bottom-up approach for other MnCn-1 refractory metal carbides. This talk will present a thermodynamic and reaction equilibria assessment of possible liquid and refractory metal substrate combinations for CH4 as a carbon source and H2 as a reducing gas. Results from experimental synthesis will be presented for several combinations of substrate and liquid catalyst, along with characterization of the 2D crystals using Raman spectroscopy and energy dispersive spectroscopy. Experimental results will be discussed in the context of the thermodynamic assessments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, ICME, Characterization |