About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2D Materials: Synthesis, Properties, and Applications
|
| Presentation Title |
Comparison of thermodynamic prediction with experimental observations of refractory metal carbides synthesized using CVD |
| Author(s) |
Sajjad Hasan, Nishat Sultana, Phillisity Neal, Jesus Acosta, Eric Payton |
| On-Site Speaker (Planned) |
Sajjad Hasan |
| Abstract Scope |
The potential of exploiting the chemistry of MXenes to tailor novel functional properties has led to interest in these 2D materials for diverse applications. Most MXene synthesis has relied on the top-down etching method, leaving alternative approaches mostly unexplored. Chemical vapor deposition (CVD) has seen limited application in MXene processing. In this study, CVD was employed to synthesize refractory metal carbides based on Mo, Nb, and V as MXene precursors. By modulating the partial pressures of H₂ and CH₄, the stoichiometry of the resulting carbide crystals was manipulated. A thermodynamic analysis was performed to assess stability and predict the formation of carbides. The synthesis products were characterized using Rietveld refinement of X-ray diffraction data, which confirmed the successful formation of carbides under various CVD conditions. Discrepancy between experimentally observed carbides and thermodynamic analysis will be discussed. The results provide valuable insight into CVD as a method for MXene synthesis. |