Diffusion kinetics of gold in TiO2 nanotube arrays for formation of Au@TiO2 nanotube arrays

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48580-48588 ◽  
Author(s):  
Wanggang Zhang ◽  
Yiming Liu ◽  
Diaoyu Zhou ◽  
Jing Wen ◽  
Liuwei Zheng ◽  
...  
Keyword(s):  
Activation Energy ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Diffusion Kinetics ◽  
Temperature Range ◽  
Heating Treatment ◽  
Kinetics Of

Heating treatment leads to the diffusion of Au into TiO2 nanotube arrays and the formation of Au nanocrystals. The activation energy for the Au diffusion on the surface of the TiO2 nanotubes in the temperature range of 400 to 500 °C is 67.2 kJ mol−1.

scholarly journals Highly Ordered TiO2 Nanotube Arrays with Engineered Electrochemical Energy Storage Performances

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 510
Author(s):  
Wangzhu Cao ◽  
Kunfeng Chen ◽  
Dongfeng Xue
Keyword(s):  
Tio2 Nanotubes ◽  
Lithium Ion ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Electrochemical Anodization ◽  
Nanotube Arrays ◽  
Free Standing ◽  
Structured Materials ◽  
Self Organized ◽  
Binder Free

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.

Enhanced solar water-splitting performance of TiO2 nanotube arrays by annealing and quenching

2014 ◽  
Vol 313 ◽  
pp. 633-639 ◽  
Author(s):  
Zhangrong He ◽  
Jianzhong Xiao ◽  
Feng Xia ◽  
Koji Kajiyoshi ◽  
Chanatip Samart ◽  
...  
Keyword(s):  
Water Splitting ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Solar Water ◽  
Solar Water Splitting
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