Fig xA SEM images of
Polyacrylonitrile (PAN, Mw 150,000) was purchased from Polysciences, Inc. (PA, USA). TiO2 nanoparticles with a particle size ranging 5–10 nm was supplied by Samsung Co. (Korea). Dimethylformamide (DMF) was purchased from Sigma-Aldrich Co. All materials were used without further treatment.
2.2. Preparation of fibers and heat treatment process
Fig. 1. Synthesis of TiC–C hybrid nanofibers via electrospinning of TiO2–PAN and carbothermal (Z)-4-Hydroxytamoxifen reaction.Figure optionsDownload full-size imageDownload as PowerPoint slide
3. Results and discussion
The SEM images of the as-spun TiO2–PAN nanofibers and the fibers after carbothermal reduction at 1400 °C are shown in Fig. 2. It was observed that the electrospinning of 12 wt% PAN in DMF solution resulted in uniform nanofibers with an average diameter of about 550 nm. The SEM image of resulting TiC–C nanofibers clearly showed the preservation of fiber morphology after carbothermal reduction. Even though the organic component of fibers was decomposed during the heat treatment, the fibers maintained their continuous shapes but exhibited shrunken and rough surface. The average diameter after carbothermal reduction was approximately 350 nm.