Preparation of superhydrophobic silicon-based net-like hollow nanostructure using electrospinning

Abstract

In this paper, the silicon-base net-like hollow nanostructure were prepared using single-nozzle electrospinning and heat treatment process. First, a precursor solution is prepared by dissolving an appropriate amount of Polyvinylpyrrolidone (PVP) and Tetraethyl orthosilicate (TEOS) in ethanol and spinning the nanofibers using a single-nozzle electrospinning. Secondly, the morphology of electrospinning nanofibers was controlled, the temperature profile was designed to prepare hollow nanofibers, and the morphology and properties of nanofibers were explored. The following instruments were used to analyze the characteristics of nanofibers: Atomic force microscopy (AFM), Field Emission Scanning Electron Microscope (FE-SEM), Transmission electron microscopy(TEM), X-ray Diffraction (XRD). The AFM was used to scan the nanofibers, and 3D Graphics were applied to explore the surface morphology of fibers. FE-SEM and TEM were used to explore the morphology and diameter of nanofibers and hollow nanofiber. The excitation and emission spectra were explored by PL. Finally, XRD was used to identify crystal structure of ceramic nanofibers. Using electrospinning technique followed by subsequent heat treatment, silicon-base superhydrophobic structure were successfully prepared. Thus, the microstructure and morphology of net-like hollow nanostructure were explored. The morphology, optical properties and structure of nanostructure were identified.