Fine powder of magnetite nanoparticles (MNPs) was doped with different contents of copper (Cu) through a mat of graphene oxide (GO) nanosheets. These compositions were incorporated into electrospun nanofibrous membranes of polycaprolactone (PCL). Mechanical properties were measured, and examining the ability of these nanofiber membranes to remove methylene blue (MB) dyes from aqueous solutions was also assessed. TEM of the resulting nanofibers has a diameter of the order of 300 nm. Moreover, the morphological features of membranes showed that diameters were varied upon the variation of dopant (Cu ions) starting from 0.35–1.06 μm and 1.8–3.9 μm at no Cu reaching 0.19–0.45 μm and 0.75–1.42 μm for the highest contribution of Cu, whereas GO scattered grains of 0.56–1.5 μm were detected. The tensile strength was changed accordingly and reached around 8.96 ± 0.45 MPa, while the toughness achieved 4.69 ± 0.29 MJ/m³ at the highest additional dopant. The designed nanofibrous membrane was able to remove 95.1% MB after 36 min of continuous exposure, while the reusability indicated that the composition was stable after 5 times of removal with efficiency around 90.1% for the 0.8Cu–MNPs–GO@PCL. The antibacterial efficiency was also investigated against both E.coli and S. aureus, and the inhibition zone recorded around 11.4 ± 1.5 and 11.1 ± 1.7 mm in dark and 15.6 ± 2.1 and 13.6 ± 1.8 mm, respectively, at the highest contribution of Cu dopant. This behavior of the manipulated nanofibrous membrane indicates that tailoring of multi-functional nanomaterials could be reached via designing scaffold-based electrospun technique.

磁铁矿纳米颗粒（MNPs）的细粉通过氧化石墨烯（GO）纳米片垫掺杂了不同含量的铜（Cu）。将这些组合物掺入聚己内酯（PCL）的电纺纳米纤维膜中。测量了机械性能，并评估了这些纳米纤维膜从水溶液中去除亚甲基蓝（MB）染料的能力。所得纳米纤维的TEM具有约300nm的直径。此外，膜的形态学特征表明，随着掺杂剂（Cu离子）的变化，直径从0.35–1.06μm和1.8–3.9μm开始变化，无Cu达到0.19–0.45μm和0.75–1.42μm，这是最大的贡献。铜，而GO的散布颗粒为0.56-1.5μm。拉伸强度相应地改变并达到约8。^3个最高掺杂剂。设计的纳米纤维膜在连续暴露36分钟后能够去除95.1％的MB，而可重复使用性表明该成分在去除5次后稳定，对于0.8Cu–MNPs–GO@PCL的效率约为90.1％。还研究了对大肠杆菌和金黄色葡萄球菌的抗菌效率，在铜的贡献最大的情况下，在黑暗和15.6±2.1和13.6±1.8 mm处分别记录了约11.4±1.5和11.1±1.7 mm的抑制区。掺杂物。被操纵的纳米纤维膜的这种行为表明，可以通过设计基于支架的电纺技术来实现多功能纳米材料的定制。