In-Situ Grown UiO-66-NH₂ Nanofibrous Membrane for Highly Effective Capture PM_2.5 and VOCs

Abstract

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.

Highly Defective Zirconium-Based Metal–Organic Frameworks for the Efficient Adsorption and Detection of Sugar Phosphates in the Biological Sample

“…The peak at 1568 cm –1 originated from C–O–Zr bonding, indicating the coordination between –COOH and Zr 4+ . The peak at 1430 cm –1 indicated the existence of the C–O bond, which also originated from an organic ligand. , The enhanced peaks at 1257 and 1387 cm –1 represented the stretching vibration of the C–N bond, confirming the presence of aromatic amines in UiO-66-NH 2 . , Zr–O absorption peaks appeared at 481, 665, and 767 cm –1 . − This analysis further confirmed that the addition of acetic acid did not significantly alter the crystal morphology of HP-UiO-66-NH 2 - X .…”

Multifunctional electrospun PP/PVDF‐HFP/MIL‐53(Fe) composite nanofiber membrane for air filtration and dye degradation

“…Furthermore, it was demonstrated that MIL-53(Al) has excellent performance in eliminating SO 2 , O 3 , and organic air pollutants. Currently, MOFs such as ZIF-8, 33,34 UIO-66, 35,36 and HKUST-1 37 have been utilized to enhance the filtration efficiency of nanofiber membranes. However, limited research has been conducted on the modulation of fiber structure via the addition of MIL-53(Fe) nanoparticles in the electrospinning solution.…”