In-Situ Grown UiO-66-NH2 Nanofibrous Membrane for Highly Effective Capture PM2.5 and VOCs

Industrial air pollutants have serious harmful effects on human health, as industry exhaust is among the main sources of air pollutants, particularly in developing countries. Thus, in this work, a novel material, oxidized poly(arylene sulfide sulfone)/UiO-66-NH2 (OPASS/UiO-66-NH2) nanofibrous membrane, was developed for the removal of both volatile organic compounds (VOCs) and PM2.5 via electrospinning, post-oxidation treatment, and in situ vertical growth. The result of scanning electron microscopy, Fourier transform infrared, X-ray diffraction, and X-ray photoelectron spectroscopy demonstrated that the OPASS/UiO-66-NH2 nanofibrous membrane was successfully prepared. In addition, four kinds of OPASS/UiO-66-NH2 nanofibrous membranes were systematically investigated to obtain the optimum one, which was treated for 15 min for UiO-66-NH2 growth. It is found OPASS/UiO-66-NH2 nanofibrous membrane has outstanding comprehensive performance, high filtration efficiency (99.98%), low pressure drop (120 Pa) for PM2.5 removal, and high sorption capacity (30.3, 28.7, and 20.3 mg/g) to dichloromethane, toluene, and benzene. More importantly, the OPASS/UiO-66-NH2 nanofibrous membrane could endure high temperatures (250 °C) and harsh environments (N-methylpyrrolidone) and still retain a stable morphology and excellent removal performance for PM2.5 and VOCs. The outstanding performance of OPASS/UiO-66-NH2 nanofibrous membrane shows potential for the application in high-temperature flue gas treatment.