Phys.org December 29, 2022
Current water purification technology shows slow adsorption of micropollutants and requires an energy-intensive process for VOCs removal. Researchers in South Korea have developed an efficient molecularly engineered covalent triazine framework (CTF) for rapid adsorption of micropollutants and VOC-intercepting performance using solar distillation. Supramolecular design and mild oxidation of CTFs (CTF-OXs) enabled hydrophilic internal channels and improve molecular sieving of micropollutants. CTF-OX showed rapid removal efficiency of micropollutants (>99.9% in 10 s) and it could be regenerated several times without performance loss. Uptake rates of selected micropollutants were high. Photothermal composite membrane fabrication using CTF-OX exhibited high VOC rejection rate (up to 98%). A prototype of synergistic purification system composed of adsorption and solar-driven membrane efficiently removed over 99.9% of mixed phenol derivatives. According to the researchers their study provides an effective strategy for rapid removal of micropollutants and high VOC rejection via solar-driven evaporation process…read more. TECHNICAL ARTICLEÂ
Credit: Daegu Gyeongbuk Institute of Science and Technology (DGIST)