Construction of nanostructured MnO2 functionalized ceramic nanofibrous membranes with good flexibility, a hierarchical mesoporous structure, high catalytic performance, and excellent durability is of great significance to the remediation of dyeing wastewater; however, creating such materials has proven to be extremely challenging. Herein, we demonstrated an intriguing approach for preparing flexible, hierarchical porous, and nanostructured MnO2 immobilized ZrO2 nanofibrous membranes (MnO2@ZrO2 NFM) through the combination of electrospinning and hydrothermal synthesis. The morphologies of MnO2@ZrO2 nanofibrous membranes could be regulated via changing the concentration of reactants, which would affect the specific surface area, porous structure, and mechanical properties of membranes. The resultant MnO2@ZrO2 NFM exhibited prominent catalytic performance towards methylene blue (MB) after forming Fenton-like reagent by cooperating with hydrogen peroxide, including high degradation degree of 95%, fast degradation rate within 40 min, good reusability in 5 cycles. Furthermore, the membranes could be used in a wide pH range of 0 to 14 and directly be taken out from solution and be used for next cycle without any post-treatment. The successful fabricating of such membranes with extraordinary catalytic performance could provide a platform for the preparation of high-performance catalysts for the remediation of dyestuffs pollution or the pre-treatment of discharging wastewater.

Flexible and hierarchical structured MnO2@ZrO2 nanofibrous membranes with high catalytic performance

2019 Fall National Meeting

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