Fabrication, characterization and photocatalytic performance of Fe-doped TiO2 nanotube composite for efficient degradation of water pollutants
- Authors
- Kim, Sung-Pil; Kim, Jong-Oh
- Issue Date
- Apr-2016
- Publisher
- DESALINATION PUBL
- Keywords
- TiO2 nanotube; Anodic oxidation; Methyl orange; Doping; UV irradiation
- Citation
- DESALINATION AND WATER TREATMENT, v.57, no.19, pp.9027 - 9033
- Indexed
- SCIE
SCOPUS
- Journal Title
- DESALINATION AND WATER TREATMENT
- Volume
- 57
- Number
- 19
- Start Page
- 9027
- End Page
- 9033
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/5092
- DOI
- 10.1080/19443994.2015.1049409
- ISSN
- 1944-3994
- Abstract
- Pure TiO2 nanotube and Fe-doped TiO2 nanotube composite were fabricated by the electrochemical anodic oxidation process and the impregnating-calcination method, respectively. The structural and spectral properties were characterized by scanning electron microscopy, energy dispersive X-ray spectrometer, X-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence, and UV-vis spectrum. These results showed that Fe was effectively deposited on the surface of TiO2 nanotube. It is demonstrated that the Fe-doped TiO2 nanotube composite can inhibit the recombination of electron-hole pairs and enhance the light harvesting ability. The photocatalytic activity of Fe-doped TiO2 nanotube composite under UV irradiation was examined in terms of color and UV-vis absorbance for the degradation of methyl orange. The photocatalytic performance of UV-C irradiation in presence of Fe-doped TiO2 nanotube composite increased obviously for the removal efficiency of color and UV-vis absorbance compared to that of UV-A irradiation, and the reaction rate constant was about 6.8 times faster than that of UV-A irradiation. This can be ascribed to the effective separation of the photo-generated charge carriers.
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