MXene synthesis in a semi-continuous 3D-printed PVDF flow reactor

Area of Science:

• Materials Science
• Chemical Engineering
• Nanotechnology

Background:

• MXenes (2D transition metal carbides, nitrides, carbonitrides) are promising for energy storage, catalysis, and optoelectronics.
• Current MXene synthesis relies on hazardous concentrated acids and HF, posing safety and scalability challenges.
• Developing eco-friendly, safe, and scalable synthesis methods is critical for MXene advancement.

Purpose of the Study:

• To present a novel semi-continuous synthesis of Ti3C2Tx MXenes using flow chemistry.
• To demonstrate a safer and more efficient alternative to traditional batch synthesis methods.
• To establish a foundation for scalable MXene production.

Main Methods:

• Utilized flow chemistry in a custom-designed 3D-printed reactor for Ti3C2Tx synthesis.
• Employed a semi-continuous process to overcome batch limitations.
• Analyzed MXene products for structural integrity and purity, focusing on aluminum removal.

Main Results:

• Achieved semi-continuous synthesis of Ti3C2Tx MXenes.
• Demonstrated enhanced safety compared to conventional batch methods.
• Reported superior removal of aluminum from the MAX phase precursor.
• Produced fully etched MXene materials.

Conclusions:

• Flow chemistry offers a safer and more scalable route for MXene synthesis.
• The 3D-printed reactor facilitates efficient and controlled MXene production.
• This method represents a significant advancement towards sustainable and industrial-scale MXene manufacturing.