Why MXenes are important?

Importance of MXenes


  • MXenes are distinguished among the plethora of existing 2D materials due to their provision of 2D sheets exhibiting metallic electrical conductance, a characteristic that was predominantly absent in the array of 2D materials, the majority of which are semiconductors, semimetals, or dielectrics. 

  • MXenes present conductivity values that have been documented to reach up to 20,000 S/cm, higher mechanical strength and rigidity in comparison to alternative solution-processed 2D materials.

  •  MXenes have capacity for scalable solution syntheses in kilogram quantities, adequate environmental durability for a wide range of applications, compatibility with biological systems, and the ability for aqueous solution processing without the need for surfactants.

  • One could perceive them as being hydrophilic, capable of being dispersed in water, 2D metals or electrically conductive clay. 

  • There is a multitude of MXenes currently accessible, with the potential for an immensely vast number of compositions. Additionally, the manipulation of properties can be further realized through reversible chemical/electrochemical intercalation, application of a specific potential, or exposure to light.

  • MXenes exhibit metallic conductance and their Fermi levels can be adjusted by external influences, akin to the behavior observed in semiconducting materials.

  • The amalgamation of characteristics found in MXenes holds significance for numerous applications. The conjunction of conductance and redox capability facilitates energy retention, while the combination of conductance and catalytic process enables electrocatalysis; the fusion of conductance with transparency is requisite for the development of transparent conductors and heaters.

  •  Incorporation of conductance with color permits the creation of photonic and optoelectronic devices. 

  • The adjustable plasmon resonance can be harnessed in applications such as photothermal therapy, photocatalysis, and surface-enhanced Raman spectroscopy.

Ref: ACS Nano 2021, 15, 5775−5780, DOI: https://doi.org/10.1021/acsnano.1c03161

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