Rutile nanotubes by electrochemical anodization

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74510-74514 ◽  
Author(s):  
Rangasamy Savitha ◽  
Ravikrishna Raghunathan ◽  
Raghuram Chetty
Keyword(s):  
Titanium Dioxide ◽  
Annealing Temperature ◽  
Electrochemical Anodization ◽  
Powder Form ◽  
Titanium Dioxide Nanotubes ◽  
Rutile Titanium Dioxide

We present a facile method to synthesize rutile titanium dioxide nanotubes (R-TiNT), directly in powder form through rapid breakdown electrochemical anodization by modifying the post anodization processing and annealing temperature.

Morphology and Electronic Structures of Calcium Phosphate Coated Titanium Dioxide Nanotubes

2011 ◽  
Vol 1352 ◽  
Author(s):  
Lijia Liu ◽  
Sun Kim ◽  
Jeffrey Chan ◽  
Tsun-Kong Sham
Keyword(s):  
Titanium Dioxide ◽  
Calcium Hydroxyapatite ◽  
Electrochemical Anodization ◽  
Edge Structure ◽  
Titanium Dioxide Nanotubes ◽  
Coating Efficiency ◽  
Different Temperatures ◽  
Crystal Phases ◽  
X Ray Absorption ◽  
Better Than

ABSTRACTTitanium dioxide nanotubes (TiO2-NT) have been synthesized via an electrochemical anodization strategy followed by calcination under different temperatures to form TiO2 nanostructures of anatase and rutile crystal phases. The nanotube-on-Ti structure is further used as a substrate for calcium hydroxyapatite (HAp) coating. The effect of TiO2 morphology and crystal phases (i.e. amorphous, anatase and rutile) on the coating efficiency of HAp has been investigated in comparison with HAp coating on bare Ti metal. The HAp coated TiO2-NT have been studied using X-ray absorption near-edge structure (XANES) at the Ti K- and Ca K-edge. The results show that TiO2 of amorphous and anatase phases are of comparably good performance for HAp crystallization, and both are better than rutile TiO2, while HAp is hardly found on bare Ti. The implications of the findings are discussed.

scholarly journals Recent advances in the use of TiO2 nanotube powder in biological, environmental, and energy applications

2019 ◽  
Vol 1 (8) ◽  
pp. 2801-2816 ◽  
Author(s):  
Walaa A. Abbas ◽  
Ibrahim H. Abdullah ◽  
Basant A. Ali ◽  
Nashaat Ahmed ◽  
Aya M. Mohamed ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Tio2 Nanotube ◽  
Powder Form ◽  
Titanium Dioxide Nanotubes ◽  
Energy Applications ◽  
The Past ◽  
Recent Advances

The use of titanium dioxide nanotubes in the powder form (TNTP) has been a hot topic for the past few decades in many applications.

scholarly journals The microstructure and mechanical properties of titanium dioxide nanotubes synthesized in the fluoride-based electrolyte

10.30544/336 ◽  
2018 ◽  
Vol 24 (2) ◽  
pp. 83-92
Author(s):  
Ying Pio Lim ◽  
Wei Hong Yeo
Keyword(s):  
Mechanical Properties ◽  
Titanium Dioxide ◽  
Wall Thickness ◽  
Hardness Test ◽  
Orthopedic Implants ◽  
Honeycomb Structure ◽  
Electrochemical Anodization ◽  
Titanium Dioxide Nanotubes ◽  
Prosthetic Devices ◽  
Cell Parameters

Titanium is one of the biomaterials commonly used for prosthetic devices due to its bio-inert properties. The discovery of titanium dioxide nanotubes (TDNTs) has created a great interest in medical applications such as dental and orthopedic implants. The synthesizing of TDNTs can produce different morphology, sizes and mechanical properties of the nanotubes – depending on the applied method. In this study, an electrochemical anodization method was used for synthesizing the TDNTs. A 100 ml mixture of 99% of ethylene glycol (EG), 1% of deionized water and 1 wt.% of ammonium fluoride (NH4F) was used as the electrolyte of the electrochemical cell. Parameters such as anodization time and the voltage applied were used to alter the morphology of the TDNTs formed. The produced nanotubes were analyzed and characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) and microhardness tester. The SEM results showed that the formed diameter of nanotubes was mainly affected by the anodizing voltage. The wall thickness was found to be irrelevant to the parameters conducted in this study. The diameter of nanotubes formed with an anodizing voltage of 30, 45 and 60 V have the diameters ranging from 46 nm to 71 nm. All of the TDNTs samples formed have a wall thickness between 11 nm and 13 nm. With the use of EG and NH4F as an electrolyte, the array of TDNTs with honeycomb structure was formed. In general, hardness test showed that the hardness of the nanotubes was inversely proportional with the anodizing time. The anodizing voltage only has little effect on the hardness of the nanotubes. The nanotubes formed by 60 V have about 3 to 5% lower hardness compared to those formed by 30 V for different anodizing times.

Titanium dioxide nanotubes conjugated with quercetin function as an effective anticancer agent by inducing apoptosis in melanoma cells

2021 ◽  
Author(s):  
Surendra Gulla ◽  
Dakshayani Lomada ◽  
Prasanna Babu Araveti ◽  
Anand Srivastava ◽  
Mamatha Kumari Murikinati ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Anticancer Agent ◽  
Melanoma Cells ◽  
Titanium Dioxide Nanotubes

scholarly journals Ni/Si-Codoped TiO2 Nanostructure Photoanode for Enhanced Photoelectrochemical Water Splitting

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4102 ◽  
Author(s):  
Ting Li ◽  
Dongyan Ding
Keyword(s):  
Water Splitting ◽  
Annealing Temperature ◽  
Photocurrent Density ◽  
Electrochemical Anodization ◽  
Codoped Tio2 ◽  
Lower Charge ◽  
Si Doped ◽  
Tio2 Nanostructures ◽  
Tio2 Photoanode ◽  
Pec Water Splitting

We synthesized Ni/Si-codoped TiO2 nanostructures for photoelectrochemical (PEC) water splitting, by electrochemical anodization of Ti-1Ni-5Si alloy foils in ethylene glycol/glycerol solutions containing a small amount of water. The effects of annealing temperature on PEC properties of Ni/Si-codoped TiO2 photoanode were investigated. We found that the Ni/Si-codoped TiO2 photoanode annealed at 700 °C had an anatase-rutile mixed phase and exhibited the highest photocurrent density of 1.15 mA/cm2 at 0 V (vs. Ag/AgCl), corresponding to a photoconversion efficiency of 0.70%, which was superior to Ni-doped and Si-doped TiO2. This improvement in PEC water splitting could be attributed to the extended light absorption, faster charge transfer, possibly lower charge recombination, and longer lifetime.

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