Removal of VOCs with TPF and TNPF Prepared by Electrospinning

摘要

Titanium Nanotube (TNT) used in this study was prepared by a modified hydrothermal method, using a mixture of Titania Degussa P-25 (TiO_2), sodium hydroxide and deionized water as a solvent. In this study, the photocatalysts fibers were prepared by electrospinning under 20 kilovolts (kV) at a distance of 15 centimeter (cm). TiO_2and TNT were mixed with polyvinyl alcohol (PVA) to generate TiO_2 photocatalysts fibers (TPF) and TNT photocatalysts fibers (TNPF), respectively. The physical and chemical properties of the photocatalysts were indicated with spectrophotometer (UV-vis), X-ray diffractometer (XRD), Fourier-Transformed Infrared Spectrometer (FTIR), Thermogravimetric Analyzer (TGA), and Scanning Electron Microscope (SEM) characterization instruments. A single factor experimental method was used to investigate the effects of operational parameters, such as initial concentration and retention time and light source, on acetone removal performance with TPF and TNPF. The results showed that the degradation efficiency increased with increasing initial concentrations. The acetone removal efficiency was greater than 90% under a retention time above 40 seconds; initial acetone concentration of less than 1,000 parts per million (ppm); and ultraviolet (UV) light source of 365 nanometer (nm)with TPF. In addition, the efficiency was greater than 90%under a retention time of above 100 seconds; initial acetone concentration of less than 500 ppm; and UV light source of 365 nm with TNPF.