Tuning the oxidation states and crystallinity of copper oxide nanofibers by calcination PROJECT TITLE :Tuning the oxidation states and crystallinity of copper oxide nanofibers by calcinationABSTRACT:Cu oxide/polyvinyl alcohol (PVA) nanofibers were synthesized by sol–gel and electrospinning technique. The obtained Cu oxide/PVA nanofibers were heated to remove the PVA compound at 673 and 873 K. The ultrafine Cu oxide nanofibers were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS). The SEM images showed that the Cu oxide nanofibers were successfully synthesized by electrospinning and calcination and the average diameters of the electrospun Cu/PVA nanofibers were 268.9 ± 97.2 nm. After the nanofibers were calcined at higher temperature than rt, the morphologies of the nanofibers changed. XRD results indicated that the crystalline structure changed from amorphous phase to monoclinic CuO through cubic Cu2O. TEM images also verified the crystal phase of Cu oxide nanofibers. XPS spectra revealed that the thermal oxidation of Cu proceeded during calcination. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Interrogation of Undersensing for an Underactuated Dynamical System Development of cap-free sputtered GeTe films for inline phase change switch based RF circuits
