| Summary: | For the removal of pollutants, a modified TiO<sub>2</sub> photocatalyst is attracting attention. Fe-doped TiO<sub>2</sub> nanofibers were prepared through a combination of electrospinning and calcination. Morphological characterization of the sample was conducted using field-emission scanning electron and transmission electron microscopy. The crystal structure of each sample was analyzed using high-resolution transmission electron microscopy, selected area electron diffraction, and Fast Fourier Transform imaging. The average diameter of the Fe-doped TiO<sub>2</sub> nanofibers was measured to be 161.5 nm and that of the pure TiO<sub>2</sub> nanofibers was 181.5 nm. The crystal phase when heat treated at 350 °C was anatase for TiO<sub>2</sub> nanofibers and rutile for Fe-doped TiO<sub>2</sub> nanofibers. The crystal phase of the TiO<sub>2</sub> matrix was easily transitioned to rutile by Fe-doping. The photocatalytic performance of each sample was compared via the photodegradation of methylene blue and acid orange 7 under ultraviolet and visible light irradiation. In the Fe-doped TiO<sub>2</sub> nanofibers, photodegradation rates of 38.3% and 27.9% were measured under UV irradiation and visible light, respectively. Although other catalysts were not activated, the photodegradation rate in the Fe-doped TiO<sub>2</sub> nanofibers was 9.6% using acid orange 7 and visible light. For improved photocatalytic activity, it is necessary to study the concentration control of the Fe dopant.
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