“…One-dimensional (1D) nanostructured materials have received increasing attention owing to their special properties, which have wide applications in various elds, such as magnetism, optics, photocatalysis, Li-ion battery, etc 1 . Many methods, such as hydrothermal method, electrochemical etching/deposition, solid state reaction, microwave synthesis, electrospinning, [2][3][4][5][6] have been used to prepare these 1D nanostructured materials. Among these methods, electrospinning is a straightforward and effective method to prepare 1D nanomaterials with diameters ranging from micrometer to nanometer, 7 including nanobers/ nanobelts, hollow nanobers, coaxial nanobers/nanobelts, Janus nanobers/nanobelts, nanowire-in-microtube structured core/shell bers.…”