Influence of annealing temperatures on the properties of low aspect-ratio TiO2 nanotube layers. (20th September 2016)

• Record Type: Journal Article
• Authors: Das, Sayantan; Zazpe, Raul; Prikryl, Jan; Knotek, Petr; Krbal, Milos; Sopha, Hanna; Podzemna, Veronika; Macak, Jan M.
• Is Part Of: Electrochimica acta. Volume 213(2016)
• Page Start: 452
• Page End: 459
• Publication Date: 2016-09-20
• Subjects: TiO2 nanotubes -- anodization -- annealing -- anatase -- rutile; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.07.135
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: 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.