ABSTRACT
A high surface-area-to-volume ratio (SA/vol) of electrospun nanofibers can significantly improve the photocatalytic performance of TiO2 because of small fiber size, and the high SA/vol provides further means for quick charge transfer to the dynamics of hole–electron recombination on a large specific surface area of TiO2 nanofibers. This chapter presents the processes involved in the fabrication of TiO2 nanofibers with polyvinyl pyrrolidone (PVP) polymer as precursor using both sol–gel and electrospinning techniques. An optimum combination of parameters obtained from TiP concentration, flow rate, needle-tip-to-collector distance, and applied voltage in response to minimizing diameter size and its variation for TiO2/PVP nanofibers was determined by means of the Taguchi design of experiment method. Such optimum condition was further implemented to explore the effect of needle size on fiber diameters accordingly.
