Freestanding TiO2 nanotube arrays with ultrahigh aspect ratio via electrochemical anodization

Jun Wang, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

304 Scopus citations

Abstract

Self-organized, freestanding titania (TiO2) membrane with ultrahigh aspect ratio of the length/diameter (∼1500) was fabricated via electrochemical anodization of highly pure titanium (Ti) foil in fluorinecontaining ethylene glycol, followed by a simple and safe detachment of the formed TiO2 membrane from the metallic Ti substrate. The resulting membrane consists of highly ordered, vertically aligned, one-side open TiO2 nanotube arrays. The pore diameter, wall thickness, and length of the nanotube arrays are 90 nm, 15 nm, and 135 μm, respectively, at a certain anodization condition.

Original languageEnglish
Pages (from-to)1257-1261
Number of pages5
JournalChemistry of Materials
Volume20
Issue number4
DOIs
StatePublished - 26 Feb 2008

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