TiO2 thin-walled nanofiber burst tube doped with Fe2O3 nanograss for efficient degradation of levofloxacin: effect of precursor

By means of electrospinning combined with impregnation and calcination, the thin-walled TiO2 nano-burst tubes with Fe2O3 nanograss 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 K-3[Fe(C2O4)(3)]center dot 3H(2)O 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% K-3[Fe(C2O4)(3)]center dot 3H(2)O 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/Fe2O3 heterostructure with special structure was prepared by introducing a small amount of acid or metallic acid salts into the precursor as a high-performance photocatalyst.