Water-Stable Chemical-Protective Textiles via Euhedral Surface-Oriented 2D Cu-TCPP Metal-Organic Frameworks

Area of Science:

• Materials Science
• Chemistry
• Environmental Science

Background:

• Adsorptive metal-organic frameworks (MOFs) show promise for chemical hazard abatement.
• Challenges include material stability and integration into functional systems.

Purpose of the Study:

• To fabricate water-stable, polymer fiber-supported MOF crystals.
• To investigate their adsorptive properties for chemical hazards under humid conditions.

Main Methods:

• Developed a hydroxy double salt (HDS) solid-source conversion strategy.
• Fabricated M-TCPP (M = Cu, Zn, Co) 2D MOF crystals on polymer fibers.
• Evaluated adsorption of ammonia (NH3) and 2-chloroethyl ethyl sulfide (CEES) at 80% relative humidity.

Main Results:

• Achieved water-stable, polymer fiber-oriented M-TCPP MOF crystals.
• Demonstrated high adsorption capacity for NH3 and CEES using Cu-TCPP.
• Enhanced NH3 adsorptive capacity by 3x compared to MOF powders on a per-mass basis.

Conclusions:

• The HDS solid-source conversion strategy enables controlled MOF crystal orientation on fibers.
• This approach provides a novel route for developing advanced chemically protective materials.
• The MOF/fiber composites show significant potential for real-world applications in hazardous environments.