Preparation And Properties Of Inorganic Nanofibers Electrospinning Method

In recent years, one-dimensional (1D) nanomaterials have been extensively explored as potential structure units of nanoscale electronics, optoelectronics, sensors, photocatalysis, and solar cells owing to their fascinating physical, chemical and biological properties. Among various kinds of methods, electrospinning is a facile and low-cost way to obtain nanofibers with high surface area to volume ratio and uniform diameters.Zinc oxide (ZnO) is a promising candidate for ultraviolet light-emitting diodes, laser diodes, and photodetectors due to the excellent optoelectronic properties. The synthesis of stable p-type conductive ZnO is the key step to realize the mentioned potential application of ZnO. In Part2, the fabrication of Ce-doped p-type ZnO by electrospinning is introduced. The surface morphology, elementary composition, crystal structures, electrical properties and a practical application of ZnO are investigated. Gate effect indicates Ce-doped ZnO nanofibers are stable p-type semiconductors. A Ce-doped ZnO/ITO heterojunction device shows a pretty good rectifying behavior with a turn on voltage of about7V.Spinel LiMn2O4is one of the most attractive cathode materials for lithium ion batteries due to its intrinsic merits such as non-toxicity, environmental friendly, low cost and high voltage platform. In Part3, we introduced the preparation electrochemical properties of LiMn2O4nanofibers via electrospinning and followed by calcination. The discharge capacity of LiMn2O4measured at0.2C is80mAh/g and about85%of its initial capacity can be retained after6cycles. The excellent discharge capacity and outstanding cycling stability can be attributed to the large surface to volume ratio of porous LiMn2O4nanofibers.Titanium dioxide (TiO2) with nanostructures usually exhibited a more outstanding performance of optical and electronic properties which made TiO2becomes an attractive nanomaterial for the development of optoelectronic devices. In Part4, TiO2nanofibers with anatase phase were successfully prepared by electrospinning and followed calcination. The optical properties of TiO2measured by UV-Vis absorption spectrometer and photosensitive test system demonstrate that the shaggy TiO2nanofibers are sensitive to ultraviolet light, the sensitivity is as high as340.