In this report, Janus nanofibers were produced with a self-designed parallel nozzle by electrospinning of a polyacrylonitrile (PAN)/dimethylformamide (DMF) solution of zinc oxide (ZnO), which is a typical UV absorbing photocatalyst, and a PAN/DMF solution of manganese oxide/cerium oxide (Mn₃O₄/CeO₂), which absorbs visible light. The produced Janus nanofibers were analyzed through X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM). The Janus fibers were composed of side by side fibers, one side of the fiber contained ZnO while Mn₃O₄/CeO₂ was accommodated onto the other side. The photocatalytic properties were confirmed using a methylene blue solution. Compared to the conventional nanofibers (CFs), as-produced Janus nanofibers showed higher performance in both UV and visible-light conditions. Moreover, results reveal that it is possible to control their photocatalytic performance under the desired light wavelength by adjusting the ratio of photocatalysts concentration on each side of the fiber. The membranes composed of functional Janus nanofibers fabricated by a specially designed nozzle can be highly exploitable in water purification, photocatalysis, etc.

在本报告中，Janus纳米纤维是用自行设计的平行喷嘴通过电纺典型的紫外线吸收光催化剂氧化锌（ZnO）的聚丙烯腈（PAN）/二甲基甲酰胺（DMF）溶液和PAN / DMF溶液生产的吸收可见光的氧化锰/氧化铈（Mn ₃ O ₄ / CeO ₂）。通过X射线衍射（XRD），场发射扫描电子显微镜（FE-SEM）和高分辨率透射电子显微镜（HR-TEM）对生产的Janus纳米纤维进行了分析。Janus纤维由并排纤维组成，纤维的一侧包含ZnO，而Mn ₃ O ₄ / CeO ₂被安置在另一侧。使用亚甲基蓝溶液确认了光催化性能。与常规纳米纤维（CFs）相比，所生产的Janus纳米纤维在紫外线和可见光条件下均显示出更高的性能。而且，结果表明，通过调节纤维两面上的光催化剂浓度的比例，可以在所需的光波长下控制它们的光催化性能。由特殊设计的喷嘴制造的由功能性Janus纳米纤维组成的膜在水净化，光催化等方面具有很高的开发价值。