Properties of carbon-doped TiO<inf>2</inf> nanofiber fabucated by electrospinning

Abstract

In this study, C-doped TiO 2 nanofibers were fabucated by electrospinning. The carbon was added into the nanofibers by using chitosan and glucose. With doped carbon from Chitosan and Glucose and fibers were calcined at 500oC, and then the optical characteristics of C-doped TiO 2 nanofibers has been changed. Nanofibers were analyzed by X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM), UV-vis, and Thermogravimetric Analysis(TGA). XRD was applied to identify phase composition of nanofibers. The morphology of nanofibers were explored by FE-SEM. Optical characteristics of absorption were measured by UV-vis. We scanned the surface and then it showed the 3D graphics of C-doped TiO 2 nanofibers. The XRD results showed phase of C-doped TiO 2 nanofibers were transformed successfully from rutile phase to anatase phase. The results of AFM showed the morphology of nanofibers became smoother after high-temperature heat treatment. Images from TEM and FE-SEM displayed the average size of nanofibers. UV-vis results revealed that the band-gap of TiO 2 was shortened. Finally, we found that the surface of C-doped TiO 2 nanofibers can be changed after the heat treatment. To sum up, the surface of nanofibers would be smoother than the one without the heat treatment.