Improved Coverage of Mo2c Mxenes by Copper Thin Film Catalyst Using Pvd-Cvd Hybrid Growth Technique

S Rouhi, O Aydin, ES Sicim, F Ay… - Available at SSRN … - papers.ssrn.com
S Rouhi, O Aydin, ES Sicim, F Ay, N Kosku Perkgoz
Available at SSRN 4521749papers.ssrn.com
We present a research study focusing on the synthesis of molybdenum carbide (Mo2C)
MXenes with precise control over structural properties. Unlike previous studies, we explore
the thin copper films deposited by PVD onto molybdenum precursor substrates, which leads
to significantly improved surface coverage of MXenes. Characterization techniques such as
µ-Raman spectroscopy and energy-dispersive spectroscopy (EDX) confirm the higher
MXene coverage achieved using this method. Our results show that even thin copper layers …
Abstract
We present a research study focusing on the synthesis of molybdenum carbide (Mo2C) MXenes with precise control over structural properties. Unlike previous studies, we explore the thin copper films deposited by PVD onto molybdenum precursor substrates, which leads to significantly improved surface coverage of MXenes. Characterization techniques such as µ-Raman spectroscopy and energy-dispersive spectroscopy (EDX) confirm the higher MXene coverage achieved using this method. Our results show that even thin copper layers of 50 nm provide complete MXene coverage, while increasing the thickness of the copper catalyst film induces shifts in the µ-Raman spectral peaks. Furthermore, raising the growth temperature promotes the synthesis of MXene-graphene hybrids. Atomic force microscopy topographies reveal that the thickness of the catalyst plays a crucial role in determining the formation and properties of the resulting MXene thin films. This study represents a critical contribution to the advancement of MXene synthesis techniques with controlled structures and properties. The combined PVD-CVD approach utilizing thin copper films obtained through PVD, overcoming the challenge of its difficult dissolution during the transfer, which is a significant obstacle for the practical application of 2D materials. By enhancing our understanding and application of MXenes, this research opens up opportunities for various fields.
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