Enhanced thermal stability and photocatalytic property of highly ordered anodized TiO2 nanotube arrays with interstitial nitrogen as dominant point defect

2020 ◽  
Vol 31 (11) ◽  
pp. 8403-8412 ◽  
Author(s):  
Ting Wang ◽  
Qing Ma ◽  
Shang Gao ◽  
Mengshi Huang
Author(s):  
Yongqian Wang ◽  
Xiande Yang ◽  
Zhengshu Wang ◽  
Xiangzhou Lv ◽  
Hanxiang Jia ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 510
Author(s):  
Wangzhu Cao ◽  
Kunfeng Chen ◽  
Dongfeng Xue

Nanoscale engineering of regular structured materials is immensely demanded in various scientific areas. In this work, vertically oriented TiO2 nanotube arrays were grown by self-organizing electrochemical anodization. The effects of different fluoride ion concentrations (0.2 and 0.5 wt% NH4F) and different anodization times (2, 5, 10 and 20 h) on the morphology of nanotubes were systematically studied in an organic electrolyte (glycol). The growth mechanisms of amorphous and anatase TiO2 nanotubes were also studied. Under optimized conditions, we obtained TiO2 nanotubes with tube diameters of 70–160 nm and tube lengths of 6.5–45 μm. Serving as free-standing and binder-free electrodes, the kinetic, capacity, and stability performances of TiO2 nanotubes were tested as lithium-ion battery anodes. This work provides a facile strategy for constructing self-organized materials with optimized functionalities for applications.


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