TiO₂ Nanowires/Nanobelts Originating from Anodically Grown Nanotube Arrays

Abstract:

TiO₂ nanotube arrays have aroused great interest because of their enormous application in areas such as gas sensor, catalysts, biological materials, and solar cells. In this report, TiO₂ nanowires/nanobelts originating from TiO2 nanotube arrays are fabricated by simple anodization of Ti foils in ethylene glycol (EG) containing 0.25wt% NH₄F. From the field emission scanning electron microscopy (FE-SEM) it is observed that the morphology of the special structure is influenced by anodization voltage, water content and anodization time. In these factors, small amount of water plays a very important role in making the special nanostructure. Moreover, a possible mechanism that showed a relationship between the formation of the special structure and electric field directed chemical etch is proposed.

• Periodical: Advanced Materials Research (Volumes 463-464)
• Pages: 802-807
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.463-464.802
• Online since: February 2012
• Authors: Hai Jun Tao, Jie Tao, Tao Wang, Zuo Guo Bao
• Keywords: Anodization, Electric Field Directed Chemical Etch, TiO₂ Nanobelts, TiO₂ Nanotube Array (TNAs), TiO₂ Nanowires

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