Preparation and characterization of calcium manganese oxide (CaMnO3) nanofibers by electrospinning

• CaMnO3 nanofibers were successfully synthesized by electrospinning.
• CaMnO3 nanofibers had average diameters ranging from 460 to 522 nm.
• CaMnO3 nanofibers exhibited a porous structure with a rough surface.

Calcium manganese oxide (CaMnO3) nanofibers with diameters ranging from 460 to 520 nm were successfully synthesized for the first time by electrospinning. The fibers were calcined at 700, 800, and 900 °C for 2 h in air. The fibers were characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The XRD patterns showed crystalline phases of CaMnO3 at 800 °C with the perovskite structure. The SEM and TEM images revealed the surface of the CaMnO3 nanofibers as rough, with a porous structure. These results indicated that calcination temperature influenced the morphology and crystalline phase of CaMnO3.