Electrostatic Spinning Preparation Of SiO₂ Mental Oxide Nanocomposite Fibers And Its Photocatalytic Properties

Electrostatic spinning technology has a great prospect in assembling and testing fields. in that it’s simple manufacturing equipment and the cheaper cost, the other advantage is that many different kinds of spinning materials and controllable craft. What’s more, the morphology, size and arrangement of nanofibers can be effectively and flexibly controlled.With the constant improvement of the socialization and people’s living standards, environmental pollution gradually get more and more attention of people, Indoor and outdoor air pollution, water pollution and soil pollution has seriously affected people’s health and normal life. Using the photocatalytic properties of semiconductor materials, organic pollutants in water or air can be completely degraded into carbon dioxide, water and inorganic at room temperature. In addition, the semiconductor nano-power catalysts, which is supported by the electrostatic spinning fiber, has the functions of sterilization, deodorant, anti-fouling, etc. most Mental Oxide and sulfide semiconductor photocatalytic materials has photocatalytic properties, such as TiO2 and ZnO. Electrostatic spinning fiber nano-catalytic materials with high catalytic efficiency, industry, easy to operate, simple preparation technology, the advantages of raw materials easy to recycle and brought to the attention of the industry.This article adopted the method of electrostatic spinning to prepare PVP/TiO2/SiO2 composite nanofibers and PVP/ZnO/SiO2 composite nanofibers with considering the present state and morphology structure of composite nanofibers. TiO2/Si O2 and ZnO/SiO2 composite nanofibers can be obtained after calcination, And its morphology and structure were characterized, Moreover, the amount of light composite nanofibers membrance catalytic influence on the effect of methylene blue was reached.The morphology and the structure of the fibers were characterized by Scanning Electron Microscopy(SEM) 、 Infrared SpectroscopyFourier Transform infrared spectroscopy(FTIR) and Thermal Gravimetric Analysis(TG) respectively to get the most uniformity, morphological, smooth surface and aligned nanofibers. Firstly, It is ultimately determined that the optimal conditions for the ZnO/SiO2 composite nanofibers were PVP(wt%)=12%, TEOS: Zn(CH3COO)2.2H2 O =1:1, at the same time, the spinning conditions were voltage=13~15kV, The distance between the needle tip and the collector was 13~15cm, the ambient temperature is 33℃~37℃ and the relative humidity was 32% to 39%. Secondly, the optimal conditions for the TiO2/Si O2 composite nanofibers were PVP(wt%)=8%, mCH3COOH=3.1g, TBT(wt%)=20%, TEOS(wt%)=16%, at the same time the spinning conditions were voltage=11kV, The distance between the needle tip and the collector was 13~14cm, the ambient temperature is 27℃~30℃ and the relative humidity was 39% to 42%. Whatis more, Respectively, methylene blue and rhodamine B solution as the target, ZnO/SiO2 and TiO2/SiO2 photocatalyst by UV-visible spectrophotometer characterized(UV-vis) and analysis of composite nanofibers Photocatalytic Degradation of organic solution performance. Whatis more, the analysis of photocatalytic degradation of organic solution performance for ZnO/SiO2 and TiO2/Si O2 composite nanofibers photocatalysts were gained by UV-visible spectrophotometer characterized(UV-vis) with methylene blue and rhodamine B solution as the target.