Ultrathin Zirconium Hydroxide Nanosheet-Assembled Nanofibrous Membranes for Rapid Degradation of Chemical Warfare Agents

Organophosphorus-based chemical warfare agents (CWAs) are highly poisonous, and recent attacks using nerve agents have stimulated researchers to develop breakthrough materials for their fast degradation. Zr-based materials have been identified as the most effective catalysts for breaking down CWAs, but in their powdered form, their practical application in personal protective equipment is limited. Herein, a surface-confined strategy for the direct growth of vertically aligned zirconium hydroxide (Zr(OH)(4)) nanosheets with ultrathin and tortuous structures on nanofibers is reported. The freestanding Zr(OH)(4) nanosheet-assembled nanofibrous membranes (NANMs) show superior catalytic performance to degrade dimethyl methylphosphonate, a nerve agent simulant, with a half-life of 4 min. In addition, intriguing membrane-type NANMs feature integrated properties of exceptional breathability, prominent flexibility, and robust fatigue resistance over one million buckling loads. This facile strategy provides a novel route to manufacture new classes of nanosheet-supported membranes for chemical-protective materials, in particular for gas filters, protective suits, and clothing.

Automated summary

A surface-confined strategy for the direct growth of vertically aligned zirconium hydroxide nanosheets on nanofibers was reported, showing superior catalytic performance to degrade nerve agent simulants. The resulting membrane-type nanofibrous membranes exhibit integrated properties of exceptional breathability, flexibility, and fatigue resistance, providing a novel route for manufacturing new classes of nanosheet-supported membranes for chemical-protective materials.