Herein, we report an allyl-imidazolium ionic liquid decorated COF and its covalent composite COF@chitosan aerogel, which were shown to be excellent selective CO₂ adsorbents and chemical conversion catalysts.

We herein report a series of COF-based poroplastic chitosan aerogels via a facile templated freeze-drying approach. The obtained composite aerogels are hydrophilic, robust, uniform and processable, however, with COF crystallinity and functionalities. Specifically, by introducing Pd@COF species (up to 50 wt%), we fabricated Pd@COF@chitosan aerogels which can be used to build highly efficient continuous flow-through microreactors for chlorobenzene (CB) dechlorination in water at room temperature. Given the versatile structural, shaping, and functional features, this approach could hopefully bring COFs into practical applications, especially concerning the growing global environmental issues.

A COF-based multifunctional reusable face mask, which exhibits solar-powered self-sanitizing ability with excellent antibacterial and antiviral performance via a triple-modal synergistic treatment, is reported.