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Structural and Phase Stability of the Ti3C2Tx MXene at Elevated Temperatures: In-situ X-Ray Diffraction Investigation

Krotkevich D, Kashkarov E, Wang Z, Syrtanov M, Travitzky N, Lider A (2025)

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Publication Language: English

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE Computer Society

Pages Range: 590-594

Conference Proceedings Title: 2025 IEEE 26th International Conference of Young Professionals in Electron Devices and Materials (EDM)

Event location: Altai

ISBN: 978-1-6654-7738-3

DOI: 10.1109/EDM65517.2025.11096751

Abstract

This study investigates the structural and phase stability of Ti₃C₂ MXene synthesized via selective etching of Ti₃AlC₂ MAX-phase powder in mixed HCl and HF acids. Flexible nanostructured films were prepared by vacuum filtration of Ti₃C₂ colloidal solution In-situ X-ray diffraction analysis revealed that initial heating triggers deintercalation and decomposition of intercalated water and hydroxyl groups, with accelerated kinetics in air due to ambient oxygen. Above 600° C, pronounced oxidation forms TiO₂, persisting under vacuum via residual surface-bound oxygen and trace atmospheric oxygen. Post -800°C exposure, both air and vacuum-treated samples exhibited loss in plasticity and altered surface morphology by formation of TiO₂ crystals, with no detectable phase transformation of Ti₃C₂ to cubic TiC. Heat treatment in vacuum and in air leading to reduction of interplanar distance of Ti₃C₂ MXene related to changes in functional surface groups of MXene. These results underscore environmental oxygen's critical role in MXene's thermal degradation pathways, necessitating stringent atmospheric control for high-temperature applications to mitigate oxidation-driven structural changes.

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APA:

Krotkevich, D., Kashkarov, E., Wang, Z., Syrtanov, M., Travitzky, N., & Lider, A. (2025). Structural and Phase Stability of the Ti3C2Tx MXene at Elevated Temperatures: In-situ X-Ray Diffraction Investigation. In 2025 IEEE 26th International Conference of Young Professionals in Electron Devices and Materials (EDM) (pp. 590-594). Altai, RU: IEEE Computer Society.

MLA:

Krotkevich, Dmitriy, et al. "Structural and Phase Stability of the Ti3C2Tx MXene at Elevated Temperatures: In-situ X-Ray Diffraction Investigation." Proceedings of the 26th IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2025, Altai IEEE Computer Society, 2025. 590-594.

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