Synthesizing of cobalt oxide nanofibers and investigation of changes in synthesizing parameters on the final product

Abstract

AbstractIn this study, the best conditions for synthesizing the cobalt oxide nanofibers using the electrospinning method was investigated. For this purpose, the effect of various factors such as solvent, calcination temperature, and polymer concentration on the crystal structure, morphology, and size of the synthesized samples was evaluated. An extensive characterization of the products was performed using x‐ray diffractometry, scanning electron microscopy, ultraviolet‐visible spectroscopy, and photoluminescence. X‐ray diffractometry results of fabricated samples at different temperatures confirm cobalt oxide synthesis. Scanning electron microscopy analysis shows that the best fibers are synthesized from a polymer solution prepared at room temperature with a dual solvent of deionized water and ethanol under a calcination temperature of 600 °C. Also, some shifts were observed by examining the optical properties using ultraviolet‐visible and photoluminescence spectroscopy. These results show that the proper selection of reaction conditions in the electrospinning method can be very effective for the synthesis of cobalt oxide fibers with morphology in nanometer sizes.