Flame annealing effects on self-organized TiO2 nanotubes

2012 ◽  
Vol 66 ◽  
pp. 12-21 ◽  
Author(s):  
Anca Mazare ◽  
Indhumati Paramasivam ◽  
Felix Schmidt-Stein ◽  
Kiyoung Lee ◽  
Ioana Demetrescu ◽  
...  
Keyword(s):  
Tio2 Nanotubes ◽  
Self Organized ◽  
Annealing Effects ◽  
Flame Annealing

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 All-Solid-State Lithium Ion Batteries Using Self-Organized TiO2 Nanotubes Grown from Ti-6Al-4V Alloy

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2121
Author(s):  
Vinsensia Ade Sugiawati ◽  
Florence Vacandio ◽  
Thierry Djenizian
Keyword(s):  
Cyclic Voltammetry ◽  
Solid State ◽  
Tio2 Nanotubes ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Electrochemical Anodization ◽  
Self Organized ◽  
Solid State Batteries ◽  
One Step ◽  
Tio2 Nts

All-solid-state batteries were fabricated by assembling a layer of self-organized TiO2 nanotubes grown on as anode, a thin-film of polymer as an electrolyte and separator, and a layer of composite LiFePO4 as a cathode. The synthesis of self-organized TiO2 NTs from Ti-6Al-4V alloy was carried out via one-step electrochemical anodization in a fluoride ethylene glycol containing electrolytes. The electrodeposition of the polymer electrolyte onto anatase TiO2 NTs was performed by cyclic voltammetry. The anodized Ti-6Al-4V alloys were characterized by scanning electron microscopy and X-ray diffraction. The electrochemical properties of the anodized Ti-6Al-4V alloys were investigated by cyclic voltammetry and chronopotentiometry techniques. The full-cell shows a high first-cycle Coulombic efficiency of 96.8% with a capacity retention of 97.4% after 50 cycles and delivers a stable discharge capacity of 63 μAh cm−2 μm−1 (119 mAh g−1) at a kinetic rate of C/10.

Fabrication of self-organized TiO2 nanotubes from columnar titanium thin films sputtered on semiconductor surfaces

2006 ◽  
Vol 8 (12) ◽  
pp. 1840-1844 ◽  
Author(s):  
Yesudas Daniel Premchand ◽  
Thierry Djenizian ◽  
Florence Vacandio ◽  
Philippe Knauth
Keyword(s):  
Thin Films ◽  
Tio2 Nanotubes ◽  
Semiconductor Surfaces ◽  
Self Organized ◽  
Titanium Thin Films

SYNTHESIS AND CHARACTERIZATION OF SELF-ORGANIZED TiO2 NANOTUBES GROWN ON Ti-15Zr ALLOY SURFACE TO ENHANCE CELL RESPONSE

2021 ◽  
pp. 101439
Author(s):  
R.T. Konatu ◽  
D.D. Domingues ◽  
A.L.A. Escada ◽  
J.A.M. Chaves ◽  
M.F.D. Netipanyj ◽  
...  
Keyword(s):  
Cell Response ◽  
Tio2 Nanotubes ◽  
Alloy Surface ◽  
Synthesis And Characterization ◽  
Self Organized

TiO2 nanotubes: Self-organized electrochemical formation, properties and applications

2007 ◽  
Vol 11 (1-2) ◽  
pp. 3-18 ◽  
Author(s):  
J.M. Macak ◽  
H. Tsuchiya ◽  
A. Ghicov ◽  
K. Yasuda ◽  
R. Hahn ◽  
...  
Keyword(s):  
Tio2 Nanotubes ◽  
Self Organized

scholarly journals Fabrication of TiO2 Nanotube by Electrochemical Anodization: Toward Photocatalytic Application

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
O. Zakir ◽  
R. Idouhli ◽  
M. Elyaagoubi ◽  
M. Khadiri ◽  
A. Aityoub ◽  
...  
Keyword(s):  
Tio2 Nanotubes ◽  
Pure Titanium ◽  
Size Control ◽  
Ammonium Fluoride ◽  
Electrode System ◽  
Electrochemical Anodization ◽  
Voltage Range ◽  
X Ray ◽  
Self Organized ◽  
Type Semiconductor

In this study, a self-organized nanotubular titanium dioxide (TiO2) array was successfully produced by anodizing pure titanium in a mixture of glycerol, distilled water (8% vol.), and ammonium fluoride using a dual electrode system. The size control and distribution of the nanopores were performed in a DC voltage range varying from 30 V to 60 V. The diameter of TiO2 nanopores varies from 59 to 128 nm depending on the anodizing voltage. Energy-dispersive X-ray spectroscopy (EDX) analysis reveals that the as-prepared films are essentially composed of TiO2. According to the X-ray diffraction (XRD) and Raman spectroscopy analysis, the nanotubular arrays of TiO2 annealed at 600°C for 2 hours are composed of a phase mixture of anatase and rutile. Mott-Schottky analysis showed that the TiO2 nanotubes are consistent with an n-type semiconductor with a donor density of about 1017 cm-3. Preliminary results on the photocatalytic degradation of a pharmaceutical pollutant showed that the TiO2 nanotubes can be used as a promising material for application in wastewater treatment.

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