Enhanced Degradation of Tetracycline by G-C3n4/Batio3/Pvdf Photocatalytic Membrane Assisted with H2o2

Abstract

The focus of this study is to prepare photocatalytic membranes with excellent ductility and large pores by coupling photocatalytic technology with membrane separation technology and synergizing with H2O2 in order to enhance the degradation rate of tetracycline (TC). In this paper, g-C3N4/BaTiO3/PVDF photocatalytic membranes were prepared by the phase conversion method, which solved the problems of catalysts' tendency to be agglomerated and difficult to be recovered in solution, and also improved the performance relative to the simple membrane separation technology. Besides, the g-C3N4/BaTiO3 photocatalyst has better compatibility with PVDF. The prepared g-C3N4/BaTiO3/PVDF photocatalytic membranes exhibited remarkable photocatalytic activity, with a TC degradation efficiency of 90.63 % under 120 min xenon lamp irradiation. In addition g-C3N4/BaTiO3/PVDF not only has good permeability, but also has high stability and reusability after five degradation TC experiments. Finally, g-C3N4/BaTiO3/PVDF photocatalytic membranes are potential photocatalytic membrane materials to provide a solution idea.

Keywords: g-C3N4, Photocatalytic membranes, BaTiO3, Degradation, Tetracycline