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Preparation of Fe-doped TiO2 nanotube and their photocatalytic activity

C. KANG1,* , B. DU1, Z. YANG1, E. XIE2

Affiliation

  1. Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721016, China
  2. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China

Abstract

Fe-doped TiO2 nanotubes were prepared by anodization and solution-coating technique. Field-emission scanning electron microscopy (SEM) and transmission electron microscope (TEM) were employed to characterize the morphology and structure of the nanotubes. The photocatalytic performance of Fe-doped TiO2 nanotube was indicated by photo-decomposition rate of Rhodamine B under ultraviolet-visible light irradiation. The results show that Fe-doped TiO2 nanotubes with the optimal concentration exhibit excellent photocatalytic activity compared to the undoped TiO2 nanotubes and the nanotubes with excessive Fe-doped proportion. This could be explained as Fe ions may play a role as e- or h+ traps and reduces e-/h+ pair recombination rate and thus improves photocatalytic efficiency. However, excessive Fe ions decrease photocatalytic efficiency immensely..

Keywords

TiO2 nanotube; Anodization; Fe-doped; Photocatalytic.

Submitted at: Feb. 3, 2015
Accepted at: Sept. 9, 2015

Citation

C. KANG, B. DU, Z. YANG, E. XIE, Preparation of Fe-doped TiO2 nanotube and their photocatalytic activity, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 9-10, pp. 1367-1371 (2015)