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Related Experiment Video

Updated: Dec 11, 2025

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

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Published on: February 12, 2020

Ionic liquid-based synthesis of MXene.

Samantha Husmann¹, Öznil Budak, Hwirim Shim

¹INM - Leibniz Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany. volker.presser@leibniz-inm.de.

Chemical Communications (Cambridge, England)

|August 20, 2020

Summary

This study introduces a novel acid-free method for producing titanium carbide (Ti3AlC2) MXenes using an ionic liquid-water mixture. This technique selectively removes aluminum, yielding high-quality MXenes with potential applications in advanced materials.

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Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

MAX phases are precursors for two-dimensional (2D) transition metal carbides, known as MXenes.
Traditional MXene synthesis often involves hazardous acids, posing environmental and safety concerns.
Developing acid-free synthesis routes is crucial for sustainable MXene production.

Purpose of the Study:

To develop an environmentally benign and efficient method for synthesizing titanium carbide (Ti3AlC2) MXenes.
To investigate the use of an ionic liquid-water mixture as a non-acidic etchant.
To demonstrate selective aluminum removal from the MAX phase structure.

Main Methods:

Etching of Ti3AlC2 MAX phase using a fluorine-containing ionic liquid and water mixture.
Utilizing the hydrolysis of the ionic liquid to facilitate selective etching.
Characterization of the resulting 2D materials.

Main Results:

Successful synthesis of titanium carbide MXenes without the use of any acid.
Selective removal of aluminum (Al) from the MAX phase structure.
Observation of ionic liquid intercalation between transition metal carbide layers.

Conclusions:

The proposed ionic liquid-water mixture etching is a viable acid-free alternative for MXene production.
This method offers a safer and greener approach to synthesizing high-quality MXenes.
The selective etching mechanism highlights the potential of ionic liquids in materials synthesis.