In this paper, highly ordered titania nanotube arrays (TNTs) were prepared by anodization of Ti foils in ethylene glycol electrolyte. The morphology of the TNTs under different voltage and duration has been studied by Scanning Electron Microscopy (SEM). The constituent elements of the TNTs are mapped by energy dispersive X-ray (EDX). Immobilized TNTs were formed in the voltage range of 20～80V. High anodic voltage (＞80V) induced detachable nanotube arrays on Ti foils. The nanotube diameter increases with increasing the applied voltage and without dependence on the anodic duration. The concentration of element oxygen is rich at top and bottom sections of the nanotube arrays. Meanwhile, the oxygen concentration on top surface decreases with increasing the anodization voltage.
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