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Acta Phys. -Chim. Sin.  2010, Vol. 26 Issue (11): 3087-3094    DOI: 10.3866/PKU.WHXB20101103
PHYSICAL CHEMISTRY OF MATERIALS     
Preparation and Characterization of One-Dimensional TiO2 Nanowire Films on a Flexible Stainless Steel Substrate
WU Tao, TAO Jie, DENG Jie, TANG Yu-Xin, ZHU Hong, GAO Peng
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
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Abstract  
We synthesized a one dimensional (1D) TiO2 nanowire with a large aspect ratio on non-Ti substrate in NaOH aqueous solution by the hydrothermal treatment of pure titanium films deposited by direct current magnetron sputtering on a flexible stainless steel substrate (50 μm). The samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoelectro- chemical methods. Results show that the density and crystallinity of the titanium film as well as the binding strength between the Ti film and the stainless steel substrate increased with an increase in substrate temperature. The optimum hydrothermal temperature for the formation of the 1D TiO2 nanowire was 130-150 ℃when the concentration of NaOH was kept at 10 mol·L-1. TiO2 nanowires with diameters of 10-30 nm and lengths of up to several microns grow in a crosswise manner and form a 3D network structure. Moreover, linear sweep voltammetry and transient photocurrent response curves indicated that the 1D TiO2 nanowire film electrode had better photoelectrochemical performance than the TiO2 nanoparticle electrode. This technique provides a new method for the fabrication of 1D TiO2 nanowire films on different non-Ti heterogeneous substrates.

 



Key wordsDirect currentmagnetron sputtering      Titaniumthin film      TiO2      Nanowire      Hydrothermalmethod     
Received: 15 April 2010      Published: 08 September 2010
MSC2000:  O643  
Fund:  

The project was supported by the Natural Science Foundation of Jiangsu Province, China (BK2004129), Aeronautical Science Foundation of China (04H5209) and Nanjing University of Aeronautics and Astronautics Research Funding, China (NS2010153).

Corresponding Authors: TAO Jie     E-mail: taojie@nuaa.edu.cn
Cite this article:

WU Tao, TAO Jie, DENG Jie, TANG Yu-Xin, ZHU Hong, GAO Peng. Preparation and Characterization of One-Dimensional TiO2 Nanowire Films on a Flexible Stainless Steel Substrate. Acta Phys. -Chim. Sin., 2010, 26(11): 3087-3094.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20101103     OR     http://www.whxb.pku.edu.cn/Y2010/V26/I11/3087

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