Shaping 90 wt% NanoMOFs into Robust Multifunctional Aerogels Using Tailored Bio-Based Nanofibrils

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Metal-organic frameworks (MOFs) possess tunable properties but are limited by their powder form for macroscopic applications.
• Existing binder matrices reduce MOF content and functionality in hybrid materials.

Purpose of the Study:

• To overcome the limitations of MOF powder form by developing robust, multifunctional MOF-based aerogels.
• To achieve high MOF loading and enhanced mechanical integrity in structured materials.

Main Methods:

• Combining nanoMOFs with same-charge, high-aspect-ratio cellulose nanofibrils (CNFs).
• Manufacturing wet-stable, multifunctional MOF-based aerogels with high nanoMOF loading (90 wt%).
• Utilizing a one-step carbonization process for energy-storage electrode applications.

Main Results:

• Fabrication of robust, wet-stable aerogels with 90 wt% nanoMOF loading.
• Demonstrated potential for water purification, CO2/CH4 gas adsorption/separation, and fire-safe insulation.
• Developed effective structural energy-storage electrodes via carbonization, preserving mechanical integrity.

Conclusions:

• High-aspect-ratio CNFs effectively bind large amounts of nanoMOFs into structured materials with superior mechanical integrity.
• The process enables synergetic properties and unlocks the intrinsic potential of MOFs for macroscopic multifunctional composites.
• This approach paves the way for practical MOF applications in diverse fields.