Paper Titles

Complementary Pass-Transistor Adiabatic Logic Using Dual Threshold CMOS Techniques
p.55

Active Vibration Control of Smart Structure Based on Alternate Driving SMA Actuators
p.61

Analysis and Design of a FBG Intelligent Flexible Structure Based on Orthogonal Curvatures
p.67

Leakage Reduction of P-Type Logic Circuits Using Pass-Transistor Adiabatic Logic with PMOS Pull-up Configuration
p.73

Structural Characteristics and Photocatalytic Capabilities of Visible-Light Enabled Columnar TiO₂ Films
p.79

Deposition of Nitrogen-Doped TiO₂ Films on Unheated Substrates Using DC Magnetron Sputtering Technique
p.85

An Integrated Multimedia Learning System for Reciprocating Internal Combustion Engines: RICEM
p.91

Particle Swarm Optimization Based on Genetic Algorithms to Optimize Ultrasonic Conditions of Extracting Chinese Medicine Effective Component
p.97

Grid-Based Web Information Retrieval Architecture Professional Content-Oriented
p.103

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 39Structural Characteristics and Photocatalytic...

Structural Characteristics and Photocatalytic Capabilities of Visible-Light Enabled Columnar TiO₂ Films

Article Preview

Abstract:

Visible-light enabled titanium oxide (TiO2) films deposited on indium tin oxide (ITO) substrates are investigated for their capabilities to both pollution control and splitting water on hydrogen production. Three types of TiO2 films are prepared at different levels of doping nitrogen (N) and carbon (C) and sputtering power. All three samples are similar in morphological and microstructural features, but differ in their interfacial phase and dopants. For the N,C-codoped TiO2 film prepared at a higher sputtering power, tin ions can permeate into the growing TiO2 film from the ITO substrate and promote the formation of crystalline Ti1-xSnxO2 layer. It shows the highest photocatalytic oxidation rate over methylene blue (MB) solution under ultraviolet and blue light irradiation, respectively. This is ascribed to the photosensitized carbon on the columnar grains, leading an increase in the MB adsorption capacity and light harvesting efficiency. Conversely, the N-TiO2 film prepared at a lower power exhibits the highest photocurrent density of which a higher Schottky barrier formed at the TiO2/ITO interface. A hydrogen yield rate of 0.25 μmol/cm2 h is obtained under blue light irradiation. These suggest that the interfacial properties of TiO2/ITO film and C-doping truly control its photocatalytic capabilities in addition to the well-known surface states.

You might also be interested in these eBooks

Quantum, Nano, Micro and Information Technologies

Info:

Periodical:

Applied Mechanics and Materials (Volume 39)

Pages:

79-84

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.39.79

Citation:

Cite this paper

Online since:

November 2010

Authors:

Kee Rong Wu, Chung Hsuang Hung, Hao Cheng Chang, Jui Ching Sun

Keywords:

Columnar, Heterostructure, Photocurrent Density, Titanium Oxide

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Y. Ma, J. -B. Qiu, Y. -A. Cao, Z. -S. Quan and J. -N. Yao, Chemosphere Vol. 44 (2001), p.1087.

[2] H. Irie, H. Mori and K. Hashimoto, Vacuum Vol. 74 (2004), p.625.

[3] W. Dai, X. Wang, P. Liu, Y. Xu, G. Li and X. Fu, J. Phys. Chem. B Vol. 110 (2006), p.13470.

[4] K.R. Wu, C.W. Yeh, C.H. Hung, T.P. Cho and W.J. Liu, J. Nanosci. Nanotechnol. Vol. 9 (2009), p.3433.

[5] K.R. Wu, C.H. Hung and M.H. Tsai, Appl. Catal. B-Environ. Vol. 92 (2009), p.357.

[6] F.R. Sensato, R. Custodio, Elson Longo, A. Beltrán and J. Andrés, Catal. Today Vol. 85 (2003), p.145.

[7] S. Mahanty, S. Roy and S. Sen, J. Cryst. Growth Vol. 261 (2004), p.77.

[8] M. Toyoda, Y. Nanbu, Y. Nakazawa, M. Hirano and M. Inagaki, Appl. Catal. B-Environ Vol. 49 (2004), p.227.

[9] M. Inagaki, R. Nonaka, B. Tryba and A.W. Morawski, Chemosphere Vol. 64 (2006), p.437.

[10] A. Brudnik, A. Gorzkowska-Sobas, E. Pamuła, M. Radecka and K. Zakrzewska, J. Power Sources Vol. 173 (2007), p.774.

DOI: 10.1016/j.jpowsour.2007.05.084

[11] O. Zywitzki, T. Modes, H. Sahm, P. Frach, K. Goedicke and D. Glöβ, Surf. Coat. Technol. Vol. 180 (2004), p.538.

[12] M. Radecka, M. Rekas, A. Trenczek-Zajac and K. Zakrzewska, J. Power Sources Vol. 181 (2008), p.46.

DOI: 10.1016/j.jpowsour.2007.10.082

[13] O. Zywitzki, T. Modes, P. Frach and D. Glöss, Surf. Coat. Technol. Vol. 202 (2008), p.2488.

[14] J. Rodriguez, M. Gomez, S. -E. Lindquist and C.G. Granqvist, Thin Solid Films Vol. 360 (2000), 250.

[15] K.R. Wu and T.P. Cho, Appl. Catal. B-Environ. Vol. 80 (2008), p.313.

[16] V. Swamy, A. Kuznetsov, L.S. Dubrovinsky, R.A. Caruso, D.G. Shchukin and B.C. Muddle, Phys. Rev. Vol. B 71 (2005), p.184302.

[17] M. Kitano, K. Tsujimaru and M. Anpo, Appl. Catal. A-Gen., Vol. 314 (2006), p.179.

[18] H. Fark, J. Chevallier and K. Reichelt, Thin Solid Films Vol. 100 (1983), p.193.

[19] L. Miao, S. Tanemura, H. Watanabe, Y. Mori, K. Kaneko and S. Toh, J. Cryst. Growth Vol. 260 (2004), p.118.

[20] S.H. Wang, T.K. Chen, K.K. Rao and M.S. Wong, Appl. Catal. B-Environ. Vol. 76 (2007), p.328.

[21] X. Yang, C. Cao, L. Erickson, K. Hohn, R. Maghirang and K. Klabunde, J. Catal. Vol. 260 (2008), 128.

[22] A. Hagfeldt, H. Lindström, S. Södergren and S.E. Lindquist, J. Electroanal. Chem. Vol. 381 (1995), p.39.

[23] G.R. Torres, T. Lindgren, J. Lu, C.G. Granqvist and S.E. Lindquist, J. Phys. Chem. B Vol. 108 (2004), p.5995.

[24] H. Yu, X. Quan, S. Chen and H. Zhao, J. Phys. Chem. C Vol. 111 (2007), p.12987.

[25] B. Gao, C. Peng, G.Z. Chen and G.L. Puma, Appl. Catal. B-Environ. Vol. 85 (2008), p.17.

[26] H. Chen, S. Chen, X. Quan, H. Yu, H. Zhao and Y. Zhang, J. Phys. Chem. C- Vol. 112 (2008), p.9285.

[27] M.J. Alam and D.C. Cameron, Thin Solid Films Vol. 420 (2002), 76.

[28] J. Lin, J.C. Yu, D. Lo and S.K. Lam, J. Catal. Vol. 183 (1999), p.368.