A novel tubular braid reinforced (TBR) PMIA/CA-PEI/Ag nanofiber membrane for application in dynamic catalysis was introduced in this study. The preparation method of the TBR PMIA/CA-PEI/Ag nanofiber membrane was facile and efficient. The TBR PMIA/CA-PEI/Ag nanofiber membrane was characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and thermal gravimetric analysis (TGA). The mechanical properties were evaluated by a universal material testing machine. The tensile strength of TBR nanofiber membrane exceeded 500 MPa, whereas that of the nanofiber membrane without reinforcement was merely 10 MPa. Besides, the compressive strength of the TBR nanofiber membrane was also reinforced, which indicated that the TBR nanofiber membrane could withstand a higher operating pressure. The reduction of 4-NP to 4-AP was selected as the model reaction to evaluate the catalytic property of TBR PMIA/CA-PEI/Ag nanofiber membrane. The apparent rate constant of dynamic catalysis was 34.58 times higher than that of static catalysis. After 10 cycles, the conversion of 4-NP was still higher than 95.3%. This indicated that the TBR PMIA/CA-PEI/Ag nanofiber membrane had superior stability and recyclability. Besides, the TBR PMIA/CA-PEI/Ag nanofiber membrane also showed superior catalytic performance when it was used for catalyzing other environmental pollutants.

中文翻译：

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贻贝启发的Ag纳米粒子制备管状编织增强PMIA纳米纤维膜及其在还原4-硝基苯酚方面的优异性能†

介绍了一种新型的管状编织增强（TBR）PMIA / CA-PEI / Ag纳米纤维膜，用于动态催化。TBR PMIA / CA-PEI / Ag纳米纤维膜的制备方法简便有效。TBR PMIA / CA-PEI / Ag纳米纤维膜的特征在于场发射扫描电子显微镜（FESEM），透射电子显微镜（TEM），X射线光电子能谱（XPS），X射线衍射（XRD）和热重分析（TGA）。通过通用材料测试机评估机械性能。TBR纳米纤维膜的拉伸强度超过500 MPa，而没有增强的纳米纤维膜的拉伸强度仅为10 MPa。此外，TBR纳米纤维膜的抗压强度也得到了增强，这表明TBR纳米纤维膜可以承受更高的工作压力。选择4-NP还原成4-AP作为模型反应，以评价TBR PMIA / CA-PEI / Ag纳米纤维膜的催化性能。动态催化的表观速率常数比静态催化的表观速率常数高34.58倍。10个循环后，4-NP的转化率仍高于95.3％。这表明TBR PMIA / CA-PEI / Ag纳米纤维膜具有优异的稳定性和可回收性。此外，TBR PMIA / CA-PEI / Ag纳米纤维膜在催化其他环境污染物时也表现出优异的催化性能。动态催化的表观速率常数比静态催化的表观速率常数高34.58倍。10个循环后，4-NP的转化率仍高于95.3％。这表明TBR PMIA / CA-PEI / Ag纳米纤维膜具有优异的稳定性和可回收性。此外，TBR PMIA / CA-PEI / Ag纳米纤维膜在催化其他环境污染物时也表现出优异的催化性能。动态催化的表观速率常数比静态催化的表观速率常数高34.58倍。10个循环后，4-NP的转化率仍高于95.3％。这表明TBR PMIA / CA-PEI / Ag纳米纤维膜具有优异的稳定性和可回收性。此外，TBR PMIA / CA-PEI / Ag纳米纤维膜在催化其他环境污染物时也表现出优异的催化性能。