About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
A Low-Cost Real-Time Monitoring System for Optimized MAX Phase Etching During MXene Synthesis Using a Hydrogen Gas Sensor |
| Author(s) |
Pratyush Chettri, Jacob Marcus Patenaude, Krutarth Kamath, Muhammad Sharif Uddin, Caleb Lee Wasserbeck, Babak Anasori |
| On-Site Speaker (Planned) |
Pratyush Chettri |
| Abstract Scope |
MXenes are typically synthesized using a top-down etching process from parent MAX phases using acid-base chemistry, most commonly hydrofluoric acid (HF). High-quality single-to-few-layer MXene flakes must be obtained under optimal etching conditions, where both under-etching (low yield) and over-etching (increased defect density) are undesirable. With over 100 reported compositions of MXenes and over 300 reported MAX phases, optimizing etching conditions using conventional ex situ characterizations such as x-ray diffraction presents a challenge. In this study, we develop a low-cost (~ $15 total) in-situ monitoring system that tracks the progress of MAX etching by measuring the rate of byproduct hydrogen gas evolution in real time. We successfully generated real-time estimates of etching reaction completion for several MAX compositions and various reaction conditions and optimized the etching time for each. Our setup provides a compact, inexpensive, and noninvasive method to monitor and optimize the etching of various MAX phases for high-quality MXenes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Ceramics, |