About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Comparative Study of Conventional and Microwave-Assisted Etching for Ti₃C₂ MXene: Effects on Yield and Quality |
| Author(s) |
Kyeong Yeon Lee, Chuan-Wen Wang, Jodie L Lutkenhaus, Micah Green, Abdoulaye Djire, Miladin Radovic |
| On-Site Speaker (Planned) |
Kyeong Yeon Lee |
| Abstract Scope |
Microwave-assisted hydrothermal etching of MAX phases has emerged as a rapid alternative to conventional MXene synthesis. This study provides a systematic comparative analysis of microwave-assisted and conventional etching of Ti₃AlC₂ to Ti₃C₂Tₓ MXenes under controlled temperature conditions. MXene yields were evaluated as a function of etching time and temperature for the microwave-assisted process and directly compared with those obtained under identical conditions using conventional etching. The results show only a limited advantage of microwave-assisted etching, as both methods achieve maximum yields exceeding 90% at comparable processing times. Furthermore, we demonstrate that a previously developed kinetic model based on hydrogen evolution during etching can be successfully applied to describe the kinetics of microwave-assisted etching. Finally, it is confirmed that the structure and properties of MXenes produced by both methods are comparable at high yields, as evidenced by XRD, SEM, XPS, AFM, and electrical conductivity measurements. |