Fabrication and characterization of self-organized mixed oxide nanotube arrays by electrochemical anodization of Ti–6Al–4V alloy

Nanotubular films on the surface of Ti-2Al-1.5Mn (TC1) alloy were fabricated by electrochemical anodization technique in aqueous ammonium fluoride solutions at 20V for 3h. The photoelectrochemical activities of the nanotube arrays were investigated, as well as their phase, structure, composition and photoabsorption properties. The photo-absorption in the visible region and the photoelectrochemical response were improved obviously. It is attributed to the Mn ion doping of TiO2 lattices. Furthermore, the resulted nanotube arrays are expected to have bright application prospects for solar utilization.

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Highly Ordered TiO2 Nanotube Arrays with Engineered Electrochemical Energy Storage Performances

Materials ◽

10.3390/ma14030510 ◽

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.

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Fabrication and characterization of highly-ordered titania nanotubes via electrochemical anodization

Materials Letters ◽

10.1016/j.matlet.2008.01.015 ◽

2008 ◽

Vol 62 (17-18) ◽

pp. 2688-2691 ◽

Cited By ~ 20

Author(s):

Ruixia Ge ◽

Wuyou Fu ◽

Haibin Yang ◽

Yanyan Zhang ◽

Wenyan Zhao ◽

...

Keyword(s):

Titania Nanotubes ◽

Electrochemical Anodization ◽

Fabrication And Characterization

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Fabrication and Characterization of Self-Organized Nanostructured Organic Thin Films and Devices

Organic Nanostructures for Next Generation Devices - Springer Series in Materials Science ◽

10.1007/978-3-540-71923-6_11 ◽

2007 ◽

pp. 263-300 ◽

Cited By ~ 2

Author(s):

Andrei Andreev ◽

Christian Teichert ◽

Birendra Singh ◽

Niyazi Serdar Sariciftci

Keyword(s):

Thin Films ◽

Organic Thin Films ◽

Self Organized ◽

Fabrication And Characterization

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Fabrication and characterization of copper doped TiO2 nanotube arrays by in situ electrochemical method as efficient visible-light photocatalyst

Ceramics International ◽

10.1016/j.ceramint.2015.03.094 ◽

2015 ◽

Vol 41 (7) ◽

pp. 8735-8741 ◽

Cited By ~ 143

Author(s):

Mohamad Mohsen Momeni ◽

Yousef Ghayeb ◽

Zohre Ghonchegi

Keyword(s):

Visible Light ◽

Electrochemical Method ◽

Tio2 Nanotube Arrays ◽

Tio2 Nanotube ◽

Nanotube Arrays ◽

Visible Light Photocatalyst ◽

Doped Tio2 ◽

Fabrication And Characterization

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Colloidal CuInS2 Based Nanocrystals /TiO2 Nanotube Arrays Composite Solar Cells Fabrication and Testing

MRS Proceedings ◽

10.1557/opl.2012.729 ◽

2012 ◽

Vol 1409 ◽

Author(s):

Vanga R. Reddy ◽

William Wilson ◽

Rick Eyi ◽

Jiang Wu ◽

M. O. Manasreh ◽

...

Keyword(s):

Solar Cells ◽

Low Cost ◽

Electrochemical Anodization ◽

Nanotube Arrays ◽

Properties And Characterization ◽

Self Organized ◽

Current Voltage ◽

Junction Type ◽

Photovoltaic Technologies ◽

First Time

ABSTRACTTo develop alternative and low cost photovoltaic technologies we have synthesized CuInS2 nanocrystals with tunable optical properties and characterization was carried out thoroughly with TEM, SEM, EDAX and XRD. Furthermore large self-organized arrays of TiO2 nanotubes were fabricated on Ti foil followed by simple electrochemical anodization technique and characterized their structure by SEM and then for the first time coupled both the nanocrystals and nanotubes to form a p-n junction type photovoltaic device. The current-voltage (I-V) characteristics of photovoltaic cells were measured to test the proof of concept. Some preliminary experiments showed that device generates some current upon illumination. However, in our case we fabricated a device without sandwiching any buffer or barrier layers in between nanocrystals and nanotube arrays. We have been optimizing our solar cells efficiency by improving quality of nanotubes and nanocrystals. Some of the interesting finding are presented and discussed.

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