Hydrothermal growth of well-aligned TiO2 nanorod arrays: Dependence of morphology upon hydrothermal reaction conditions

Rare Metals - Tập 29 - Trang 286-291 - 2010
Yuxiang Li1, Mei Zhang1, Min Guo1, Xidong Wang2
1Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, China
2College of Engineering, Peking University, Beijing, China

Tóm tắt

Well-aligned TiO2 nanorod arrays (TNAs) were prepared on pretreated quartz substrates via hydrothermal method. The effect of the different preparation conditions on the growth morphologies of TNAs was systematically investigated by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). The photocatalytic properties were tested by photodegradation of a methyl blue solution. It is demonstrated that the hydrothermal reaction conditions, such as precursor concentration, hydrothermal reaction temperature, and hydrothermal reaction times, can greatly affect the growth of TNAs. Controlling the preparation process, TNAs with 2 μm in length and 140–170 nm in diameter and well-aligned orientation have been successfully prepared. The photocatalytic experiment results indicate that TNAs have much better photocatalytic activity than TiO2 nanoparticles.

Tài liệu tham khảo

Wold A., Photocatalytic properties of titanium dioxide (TiO2), Chem. Mater., 1993, 5: 280.

Malwadkar S.S., Gholap R.S., Awate S.V., Korake P.V., Chaskar M.G., and Gupta N.M., Physico-chemical, photo-catalytic and O2-adsorption properties of TiO2 nanotubes coated with gold nanoparticles, J. Photochem. Photobiol. A, 2009, 203: 24.

Bae S., Shim E., Yoon J., and Joo H., Enzymatic hydrogen production by light-sensitized anodized tubular TiO2 photoanode, Sol. Energy Mater. Sol. Cells, 2008, 92: 402.

Yu Y.X. and Xu D.S., Single-crystalline TiO2 nanorods: Highly active and easily recycled photocatalysts, Appl. Catal. B, 2007, 73: 166.

Manera M.G., Spadavecchia J., Buso D., Fernández C.J., Mattei G., Martucci A., Mulvaney P., Juste J.P., Rella R., Vasanelli L., and Mazzoldi P., Optical gas sensing of TiO2 and TiO2/Au nanocomposite thin films, Sen. Actuators B, 2008, 132:107.

Yang D.J., Park H., Cho S.J., Kim H.G. and Choi W.Y., TiO2-nanotube-based dye-sensitized solar cells fabricated by an efficient anodic oxidation for high surface area, J. Phys. Chem. Solids, 2008, 69: 1272.

Zhang Q., Chakraborty A.K. and Lee W.I., Preparation of titania nanotape array and its photocatalytic property, J. Phys. Chem. Solids, 2008, 69: 1450.

Huang C.M., Liu X.Q., Liu Y.P. and Wang Y.Y., Room temperature ferromagnetism of Co-doped TiO2 nanotube arrays prepared by sol-gel template synthesis, Chem. Phys. Lett., 2006, 432: 468.

Attar A.S., Ghamsari M.S., Hajiesmaeibaigi F., Mirdamadi S., Katagiri K. and Koumoto K., Sol-gel template synthesis and characterization of aligned anatase-TiO2 nanorod arrays with different diameter, Mater. Chem. Phys., 2009, 113: 856.

Peng X. and Chen A., Dense and high-hydrophobic rutile TiO2 nanorod arrays, Appl. Phys. A, 2005, 80: 473.

Paulose M., Shankar K., Yoriya S., Prakasam H.E., Varghese O.K., Mor G.K., Latempa T.A., Fitzgerald A., and Grimes C.A., Anodic growth of highly ordered TiO2 nanotube arrays to 134 μm in length, J. Phys. Chem. B, 2006, 110: 16179.

Yang Y., Wang X.H., and Li L.T., Synthesis and growth mechanism of graded TiO2 nanotube arrays by two-step anodization, Mater. Sci. Eng. B, 2008, 149: 58.

Pradhan S.K., Reucroft P.J., Yang F., and Dozier A., Growth of TiO2 nanorods by metallorganic chemical vapor deposition, J. Cryst. Growth, 2003, 256: 83.

Maekawa T., Kurosaki K., Tanaka T. and Yamanaka S., Thermal conductivity of titanium dioxide films grown by metal-organic chemical vapor deposition, Surf. Coat. Technol., 2008, 202: 3067.

Yun H., Lin C.J., Li J., Wang J.R., and Chen H.B., Low-temperature hydrothermal formation of a net-like structured TiO2 film and its performance of photogenerated cathode protection, Appl. Surf. Sci., 2008, 255: 2113.

Li G., Liu Z.Q., Zhang Z., and Yan X., Preparation of titania nanotube arrays by the hydrothermal method, Chin. J. Catal., 2009, 30: 37.

Feng X.J., Zhai J., and Jiang L., The fabrication and switchable superhydrophobicity of TiO2 nanorod films, Angew. Chem. Int. Ed., 2005, 44: 5115.

Kakiuchi K., Hosono E., Imai H., Kimura T., and Fujihara S., {111}-faceting of low-temperature processed rutile TiO2 rods, J. Cryst. Growth, 2006, 293: 541.

Liu B. and Aydill E.S., Growth of oriented single-crystalline rutile TiO2 nanorods on transparent conducting substrates for dye-sensitized solar cells, J. Am. Chem. Soc., 2009, 131: 3985.

Li Y.X., Guo M., Zhang M., and Wang X.D, Hydrothermal synthesis and characterization of TiO2 nanorod arrays on glass substrates, Mater. Res. Bull., 2009, 44: 1232.

Thông tin
Thông tin xuất bản

Rare Metals

Tập 29

286-291

Thông tin tác giả