Multifunctional oxidized poly (arylene sulfide sulfone)/UiO-66 nanofibrous membrane with efficient adsorption/separation ability in harsh environment

Abstract Wastewater compositions complexity has severely increased with the rapid industrialization process. In this work, a multifunctional oxidized poly (arylene sulfide sulfone)/UiO-66 (OPASS-U) nanofibrous membrane was successfully developed via electrospinning technology, which could simultaneously remove the multiple contaminants, such as emulsified oil, organic dyes, and heavy metal ions and exhibit outstanding stability in the corrosive and harsh environment. It is founded that the OPASS-U nanofibrous membrane had large specific surface area, hydrophobicity, and high flux. The OPASS-U nanofibrous membrane was demonstrated to remove oil from both oil/water and water-in-dichloromethane emulsion with high removal efficiency (98.44%) and flux (636 L/m2h). It also represented high adsorption amounts for methylene blue and Cr (VI) with opposite charges and large specific surface area. Meanwhile, the OPASS-U nanofibrous membrane could achieve 99.9% regeneration efficiency after ten cycles of methylene blue removal. More importantly, this membrane maintained an outstanding stable morphology and high removal performance for a variety of contaminants after storing in corrosive and harsh solution, which could be widely utilized in complex wastewater treatment especially under harsh environment.