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Hydrogen Evolution Reaction Activity in Mo2TiC2Tx MXene Derived from Mo2TiAlC2 MAX Phase: Insights from Compositional
Jan Luxa1, Petr Kupka1, Fedor Lipilin1
1Department of Inorganic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague, Czech Republic.
This study explores the catalytic potential of Mo2TiAlC2 MAX phase and Mo2TiC2Tx MXene for hydrogen evolution reaction (HER). MXene
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- MAX phases are precursors to MXenes, a promising class of 2D materials.
- MXenes offer significant potential for energy conversion technologies.
Purpose of the Study:
- Investigate the catalytic properties of Mo2TiAlC2 MAX phase and Mo2TiC2Tx MXene for the hydrogen evolution reaction (HER).
- Understand the structural and chemical transformations influencing their performance.
Main Methods:
- X-ray diffraction (XRD)
- Scanning electron microscopy (SEM)
- Energy-dispersive spectroscopy (EDS)
- X-ray photoelectron spectroscopy (XPS)
Main Results:
- HER catalytic activity is mainly influenced by the MAX phase and its derived MXene.
- MXene catalytic activity improves over time due to MoO2 formation.
- Secondary phases were present but did not dominate HER activity.
Conclusions:
- Mo2TiAlC2 MAX phase and Mo2TiC2Tx MXene show promise for HER.
- Understanding material transformations is key to optimizing MXene performance in energy applications.
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