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Advances in Condensed Matter Physics
Volume 2014, Article ID 254603, 7 pages
http://dx.doi.org/10.1155/2014/254603
Research Article

Fabrication of TiO2 Nanofilm Photoelectrodes on Ti Foil by Ti Ion Implantation and Subsequent Annealing

School of Physics and Technology, Center for Ion Beam Applications, Wuhan University, Wuhan 430072, China

Received 11 March 2014; Accepted 12 April 2014; Published 8 May 2014

Academic Editor: Shaohua Shen

Copyright © 2014 Yichao Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The TiO2 photoelectrodes fabricated on the substrate of Ti foils by Ti ions implantation and subsequent annealing at different temperatures were applied for water splitting. The size of TiO2 nanoparticles increased with annealing temperatures, and the GIXRD patterns and Raman spectra demonstrate that the phase of TiO2 turns to rutile at high temperature. The photoelectrochemical (PEC) and X-ray photoelectron spectroscopy (XPS) spectra of the valence band demonstrate that the samples annealed at 400 and 500°C show the n-type property. The sample annealed at 600°C shows the weak p-type TiO2 property. For the sample annealed at 700°C, the negative photocurrent is main, which mainly performs the p-type property of TiO2. The IPCE values indicate that the absorption edges are red shifted with the increase of annealing temperatures.