Fabrication and Thermal Oxidation of ZnO Nanofibers Prepared via Electrospinning Technique

Abstract

Materials on the scale of nanoscale have widely been used as research topics because of their interesting characteristics and aspects they bring into the field. Out of the many metal oxides, zinc oxide (ZnO) was chosen to be fabricated as nanofibers using the electrospinning method for potential uses of solar cells and sensors. After ZnO nanofibers were obtained, calcination temperature effects on the ZnO nanofibers were studied and reported here. The results of scanning electron microscopy (SEM) revealed that the aggregation of the ZnO nanofibers progressed by calcination. X-ray diffraction (XRD) study showed the hcp ZnO structure was enhanced by calcination at 873 and 1173 K. Transmission electron microscopy (TEM) confirmed the crystallinity of the calcined ZnO nanofibers. X-ray photoelectron spectroscopy (XPS) verified the thermal oxidation of Zn species by calcination in the nanofibers. These techniques have helped us deduce the facts that the diameter of ZnO increases as the calcination temperature was raised; the process of calcination affects the crystallinity of ZnO nanofibers, and the thermal oxidation of Zn species was observed as the calcination temperature was raised.

Nano-Sized Antioxidative Trimetallic Complex Based on Maillard Reaction Improves the Mineral Nutrients of Apple (Malus domestica Borkh.)

“…The three C 1s peaks at 284.2, 285.4, and 287.5 eV were assigned to the carbon as C–C/C–H, C–O/C–N, and C=O, respectively. The deconvoluted O 1s was fitted with three components at 530.7, 531.7, and 532.6 eV belonging to metal–O, O–H, and surf–O/C–O, respectively ( 24 , 54 ). The N 1s peak can be deconvoluted into two peaks at 399.2 and 401.1 eV, which assigned, respectively, to pyridinic-N/metal–N and C–N/N–H ( 24 , 55 ).…”

Fabrication and Characterization of Zinc Oxide-Based Electrospun Nanofibers for Mechanical Energy Harvesting

“…Solution flow rates lower than 2 ll/min were not possible because at such low flow rates, the solution dried and clogged the hole of the syringe of the electrospinning machine. In previous studies, the electrospinning machine has commonly been used at flow rates of 5 ll/min [16], 16 ll/min [41], and 16.7 ll/min [16]. Larger solution flow rates require stronger electrostatic forces.…”

Tailoring the Surface Characteristics of CuSe Thin Films by Adjusting the Compositional Ratio

“…The charge effect of samples was corrected by aliphatic carbon at 284.6 eV. [ 14,21,22 ] Cu 2+ has 3 d 9 structure while Cu + and Cu 0 have fully filled d ‐orbitals, 3 d 10 . [ 23,24 ] Therefore, Cu + and Cu 0 could not be distinguished due to the final state effect caused by the same number of electrons in the final subshell.…”