TiO2thin-walled nanofiber burst tube doped with Fe2O3nanograss for efficient degradation of levofloxacin: effect of precursor.

By means of electrospinning combined with impregnation and calcination, the thin-walled TiO2nano-burst tubes with Fe2O3nanograss on the surface were synthesized. The effects of precursor properties and concentration on the morphology, structure and photochemical properties of the prepared nanostructures were studied. Adding K3[Fe(C2O4)3]·3H2O into the electrospinning solution as the precursor can not only realize the preparation of nanograss and thin-walled nano-burst tubes, but also achieve better degradation effect than that of FeCl3. However, the composite prepared by adding 2% K3[Fe(C2O4)3]·3H2O has the best synergistic effect, showing the best photoresponse performance and catalytic efficiency, and achieving the degradation of 94% levofloxacin within 90 min. In this study, a simple and economical synthesis strategy was proposed, that is, TiO2/Fe2O3heterostructure with special structure was prepared by introducing a small amount of acid or metallic acid salts into the precursor as a high-performance photocatalyst.