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.

scholarly journals Synthesis of TiO2 nanotubes by electrochemical anodization method for photocatalytic application

2013 ◽  
Vol 16 (2) ◽  
pp. 5-12
Author(s):  
Tien Thuy Thai ◽  
Quyen Van Le ◽  
Tuyen Van Au ◽  
Nhi Hai Ha ◽  
Hung Huu Khanh Nguyen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Tio2 Nanotubes ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Electrochemical Anodization ◽  
Nanotube Arrays ◽  
Photo Degradation ◽  
Self Organized ◽  
Photocatalytic Application ◽  
Inner Diameter

Self–organized TiO2 nanotube arrays were synthesized by anodization of Ti foil in ethylene glycol electrolyte containing water and NH4F. The photocatalytic activities of fabricated samples were evaluated by the degradation of methylene blue under UV A irradiation. Various factors such as electrolyte composition, voltage, anodization time, annealing time were also investigated in order to find out the conditions for synthesis of TiO2 nanotube arrays which show the highest photocatalytic activity. The as–synthesized TiO2 nanotubes were highly ordered, with the inner diameter of 6–130nm and the length of 2–3μm. The nanotubes presented a good adhesion with the Ti foil. The photocatalytic efficiency of the best sample (2x2cm area) reached 69% in the photo-degradation of 100ml of 5.10–6M methylene blue after 3 hours under UV A irradiation.

scholarly journals Vertically Aligned Binder-Free TiO2 Nanotube Arrays Doped with Fe, S and Fe-S for Li-ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2924
Author(s):  
Suriyakumar Dasarathan ◽  
Mukarram Ali ◽  
Tai-Jong Jung ◽  
Junghwan Sung ◽  
Yoon-Cheol Ha ◽  
...  
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Electrochemical Anodization ◽  
Nanotube Arrays ◽  
Kinetic Properties ◽  
Outer Diameter ◽  
Impregnation Method ◽  
Binder Free ◽  
Vertically Aligned ◽  
Discharge Capacities

Vertically aligned Fe, S, and Fe-S doped anatase TiO2 nanotube arrays are prepared by an electrochemical anodization process using an organic electrolyte in which lactic acid is added as an additive. In the electrolyte, highly ordered TiO2 nanotube layers with greater thickness of 12 μm, inner diameter of approx. 90 nm and outer diameter of approx. 170 nm are successfully obtained. Doping of Fe, S, and Fe-S via simple wet impregnation method substituted Ti and O sites with Fe and S, which leads to enhance the rate performance at high discharge C-rates. Discharge capacities of TiO2 tubes increased from 0.13 mAh cm−2(bare) to 0.28 mAh cm−2 for Fe-S doped TiO2 at 0.5 C after 100 cycles with exceptional capacity retention of 85 % after 100 cycles. Owing to the enhancement of thermodynamic and kinetic properties by doping of Fe-S, Li-diffusion increased resulting in remarkable discharge capacities of 0.27 mAh cm−2 and 0.16 mAh cm−2 at 10 C, and 30 C, respectively.

Construction of self-organized free-standing TiO2 nanotube arrays for effective disinfection of drinking water

2010 ◽  
Vol 85 (8) ◽  
pp. 1061-1066 ◽  
Author(s):  
Jiawei Ng ◽  
Xiwang Zhang ◽  
Tong Zhang ◽  
Jia-Hong Pan ◽  
Jian-Hong Alan Du ◽  
...  
Keyword(s):  
Drinking Water ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Free Standing ◽  
Self Organized ◽  
Construction Of Self

Binder-free combination of graphene nanosheets with TiO2 nanotube arrays for lithium ion battery anode

2015 ◽  
Vol 23 (3) ◽  
pp. 569-575 ◽  
Author(s):  
Ruijin Meng ◽  
Hongying Hou ◽  
Xianxi Liu ◽  
Jixiang Duan ◽  
Song Liu
Keyword(s):  
Lithium Ion Battery ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Binder Free ◽  
Battery Anode

Binder-free combination of amorphous TiO2 nanotube arrays with highly conductive Cu bridges for lithium ion battery anode

Ionics ◽  
2016 ◽  
Vol 22 (9) ◽  
pp. 1527-1532 ◽  
Author(s):  
Ruijin Meng ◽  
Hongying Hou ◽  
Xianxi Liu ◽  
Jixiang Duan ◽  
Song Liu
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Binder Free ◽  
Amorphous Tio2 ◽  
Battery Anode

Electronic properties of free-standing TiO2 nanotube arrays fabricated by electrochemical anodization

2015 ◽  
Vol 17 (34) ◽  
pp. 22064-22071 ◽  
Author(s):  
Chi Liang Chen ◽  
Chung-Li Dong ◽  
Chia-Hao Chen ◽  
Jen-Wei Wu ◽  
Ying-Rui Lu ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Electronic Structures ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Electrochemical Anodization ◽  
Nanotube Arrays ◽  
Free Standing

Different electronic structures between the top and bottom of TiNT revealed by XAS, SPEM, and RIXS.

The Preparation of TiO2 Nanotube Arrays

2011 ◽  
Vol 306-307 ◽  
pp. 1779-1784
Author(s):  
Lai Xue Pang ◽  
Peng Fei Cuan ◽  
Hong Shi ◽  
Xin De Tang
Keyword(s):  
Hydrogen Generation ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
The Self ◽  
Electrochemical Anodization ◽  
Nanotube Arrays ◽  
Self Organized ◽  
Water Photoelectrolysis ◽  
Sensitized Solar Cells

Vertically oriented, highly ordered TiO2 nanotube arrays were fabricated via electrochemical anodization of high purity Ti sheet and Ti foil, which is increasing importance due to their impressing properties in a variety of applications including dye-sensitized solar cells, hydrogen generation by water photoelectrolysis, potocatalysis, and gas sensor. The well aligned TiO2 nanotube arrays by potentiostatic anodization of Ti foil (with 0.3mm thickness) were constructed. We have achieved the self-aligned high ordered nanotube arrays in aqueous electrolyte containing HF and ethylene glycol electrolyte containing NH4F. Depending on the fluoride ion mobile velocity, the resulting nanotubes arrays exhibit the different morphology. The elaborated electrolyte on the morphology of the self-organized nanotubes arrays was investigated. Thermal annealing on the anodized Ti induced crystalline formation, which is confirmed by Raman spectroscopy measurement.

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