Influence of annealing temperatures on the properties of low aspect-ratio TiO₂ nanotube layers

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• 作者：Sayantan Das^a ; Raul Zazpe^a ; Jan Prikryl^a ; Petr Knotek^b ; Milos Krbal^a ; Hanna Sopha^a ; ¹ ; Veronika Podzemna^a ; Jan M. Macak^a ; ¹ ; ^{jan.macak@upce.cz" class="auth_mail" title="E-mail the corresponding author}
• 关键词：TiO2 nanotubes ; anodization ; annealing ; anatase ; rutile
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：20 September 2016
• 年：2016
• 卷：213
• 期：Complete
• 页码：452-459
• 全文大小：2457 K

文摘

The present work reports on the effect of thermal annealing on electrical, optical and structural properties of low aspect ratio self-organized TiO₂ nanotube layers formed by anodization of Ti. The average inner diameter and length of the nanotubes was 100 nm and 1 μm, respectively. From the whole range of temperatures (300–600 °C), annealing at 400 °C leads to the formation of crystalline TiO₂ nanotube layers with anatase structure offering best electrical and photo-electrochemical properties. Conducting atomic force microscopy studies have been explored for the first time to identify the annealing temperature of nanotube TiO₂ layers with best electrical properties.