Supramolecular Engineering of Amorphous Porous Polymers for Rapid Adsorption of Micropollutants and Solar-Powered Volatile Organic Compounds Management

Abstract

In this study, a highly efficient molecularly engineered covalent triazine framework (CTF) for rapid adsorption of micropollutants and volatile organic compound (VOC)-intercepting performance using solar distillation is reported. Supramolecular design and mild oxidation of CTFs (CTF-OXs) enable hydrophilic internal channels and improve molecular sieving of micropollutants. CTF-OX shows rapid removal efficiency of micropollutants and can be regenerated several times without performance loss. Additionally, photothermal composite membrane fabrication using CTF-OX exhibits high VOC rejection rate under 1 sun irradiation (1 kW m-2). A prototype of synergistic purification system composed of adsorption and solar-driven membrane can efficiently remove mixed phenol derivatives. This study provides an effective strategy for rapid removal of micropollutants and high VOC rejection via solar-driven evaporation process.