Preparation and photocatalytic properties of NiO-TiO₂ coaxial nanofibers

Ti(OC₄H₉)₄/Ni(CH₃COO)₂·4H₂O PVP fibers were prepared by coaxial electrospinning using PVP/Ni(CH₃COO)₂·4H₂O sol as the core and PVP/Ti(OC₄H₉)₄ sol as the shell, and then Ti(OC₄H₉)₄/ Ni(CH₃COO)₂·4H₂O PVP fibers were heated at 550 ℃ for 6 h to obtain NiO-TiO₂ coaxial nanofibers. The structure and properties of the NiO-TiO₂ coaxial fibers were investigated using XRD, SEM, FTIR and TG. The photocatalytic properties of NiO-TiO₂ coaxial nanofibers were studied by the degradation of methylene blue under UV irradiation. In comparing with TiO₂ nanofibers, the NiO-TiO₂ coaxial nanofibers exhibite higher photocatalytic activity for the degradation of methylene blue, and the catalyst could be used repeatedly.