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Electrochemical Fabrication of Titania Nanotube Arrays with Tunning Nature of Dimethyl Sulfoxide and its Application for Hydrogen Sensing

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Abstract:

School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China In the present work, tuning effects of dimethyl sulphoxide (DMSO) on the length, wall thickness, dimension and morphology of titania nanotube arrays fabricated by anodization was investigated. DMSO presented in both ethylene glycol and glycerol electrolytes provided excellent tunability in length, wall thickness and diameter of the produced TiO2 nanotube arrays by systematically varying the DMSO concentration. At the DMSO concentration of 12 wt% in ethylene glycol, the nanotube length could be up to 13.0 μm at 20 V for 8 h anodization. The TiO2 nanotube arrays produced in DMSO containing ethylene glycol or glycerol electrolytes displayed a high sensitivity to hydrogen at room temperature compared to the absence of DMSO. The further enhancement of resistance response could be achieved by coating a Pt and Pd layer on the surface of TiO2 nanotube-arrays. The presented work provided a simple way to control formation of TiO2 nanotube arrays through the tuning effects of DMSO in ethylene glycol or glycerol electrolytes.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.5824

Publication date: April 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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