Photocatalytic Degradation Performance of TiO2/PTFE Membrane Catalyst to Methylene Blue

In order to improve the catalytic stability and recoverability of the TiO2 photocatalyst, a TiO2/poly(tetrafluoroethylene) (PTFE) membrane was prepared by electrospinning, immersion, and calcination. The TiO2/PTFE membrane was characterized by SEM, FTIR, XPS, and XRD. The effect of different concentrations of methylene blue (MB) and calcination temperature and the holding time of the TiO2/PTFE membrane were discussed to optimize the parameters. The result indicated that the TiO2 anatase crystal was successfully supported on the surface of the PTFE fiber after calcination, and the TiO2/PTFE membrane possessed high photocatalytic activity and could be recycled by simple filtration.