国产成人亚洲精品无码青app,白丝紧致爆乳自慰喷水,国产疯狂女同互磨高潮在线观看,jizzjizz少妇亚洲水多

Nanofibers of Fe3+, La3+ co-doped titanium dioxide?(TiO2)/Polyvinyl acetate (PVAc) composite have?been prepared by electrospinning process. The?ceramic nanofibers co-doped with metal ions were?obtained by high temperature calcination of the?organic/inorganic composite fibers. The structure,?crystalline state and surface morphologies were
characterized by scanning electron microscopy?(SEM), X-ray Diffraction (XRD), Fourier transform?infrared spectroscopy (FTIR) and atomic force?microscope (AFM), respectively. The observation by?SEM revealed that there was a significant difference?in the fibrous structure of the nanofibers before and?after co-doping and calcinating. XRD patternsindicated the lattice of TiO2 nanocrystalline were?distorted by co-doped ions. FTIR spectrum further?confirmed the presence of Fe and La oxidate in the?co-doped nanofibers. AFM images showed that?comparing to TiO2 nanofibers, the roughness was
increased on the surface of co-doped nanofibers.?Before and after doping, the photocatalysis activity of?the nanofibers were analyzed using ultraviolet-visible?spectrophotometer (UV-Vis). The photocatalysis?activity were significantly improved by the porous?roughness surface structure and cooperative actions?of Fe3+, La3+ co-doping .