Photo Electrochemical Responses of Titanium Oxide Nanotube Arrays on Pure Titanium Substrate

This paper deals with photo electrochemical responses of titanium dioxide nanotubes on pure titanium. Photosensitive electrodes (anodes) with the major composition of doped oxides were made using the titanium oxide nanotubes. The responses of the oxide nanotubes with different additives to both ultraviolet (Uv) and visible (Vis) light were illustrated. Research results of the enhance absorption of visible light by adding transition metals or metallic oxides including Co, Ni, Cu, Zn, CoO, CuO, NiO, ZnO into the nanotubes will be shown. Finally, test results of the photo electrochemical fuel cells using diluted glycerol as the fuel under the irradiation of natural light will be presented and the open circuit voltage values will be given. The photo electrochemical test results show that the doped titanium oxide nanotubes show the n-type behavior. The photo anodes can absorb both ultraviolet and visible light. But the response to the ultraviolet light is five to ten times stronger.

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Titanium Oxide Nanotubes Doped for Use in a Visible-Light Biophotofuel Cell

ASME 2012 International Manufacturing Science and Engineering Conference ◽

10.1115/msec2012-7255 ◽

2012 ◽

Author(s):

Evan Clark ◽

Yong X. Gan ◽

Chao Xue

Keyword(s):

Visible Light ◽

Titanium Oxide ◽

Light Absorption ◽

Open Circuit ◽

Transition Metal Doping ◽

Voltage Measurement ◽

Cobalt Nickel ◽

Titanium Oxide Nanotubes ◽

Measurement Results ◽

Cobalt And Nickel

Multiple metal and non-metal dopants were added to titanium oxide nanotubes to enhance the photosensitive behavior. Six elements including nitrogen, sulfur, zinc, copper, cobalt, and nickel were incorporated into titanium oxide as the dopants. The doped titanium oxide nanotubes were made into photosensitive anodes and placed in ethanol to form fuel cells. The open circuit voltage measurement results showed that after doping, all the specimens tested were allowed the absorption of visible light. However, the resulted in voltages were slightly less than of those obtained through ultraviolet light absorption tests. Among the transition metal doping elements and the non-metal elements, cobalt, nickel and zinc showed the most promise in improving the visible light absorption.

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Titanium oxide nanotube arrays prepared by anodic oxidation

Journal of Materials Research ◽

10.1557/jmr.2001.0457 ◽

2001 ◽

Vol 16 (12) ◽

pp. 3331-3334 ◽

Cited By ~ 1548

Author(s):

Dawei Gong ◽

Craig A. Grimes ◽

Oomman K. Varghese ◽

Wenchong Hu ◽

R. S. Singh ◽

...

Keyword(s):

Titanium Oxide ◽

Anodic Oxidation ◽

Hydrofluoric Acid ◽

Layer Structure ◽

Porous Alumina ◽

Pure Titanium ◽

Nanotube Arrays ◽

Titanium Sheet ◽

Anodization Time ◽

Titanium Oxide Nanotubes

Titanium oxide nanotubes were fabricated by anodic oxidation of a pure titanium sheet in an aqueous solution containing 0.5 to 3.5 wt% hydrofluoric acid. These tubes are well aligned and organized into high-density uniform arrays. While the tops of the tubes are open, the bottoms of the tubes are closed, forming a barrier layer structure similar to that of porous alumina. The average tube diameter, ranging in size from 25 to 65 nm, was found to increase with increasing anodizing voltage, while the length of the tube was found independent of anodization time. A possible growth mechanism is presented.

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Influence of Mn, Cu, and Cd–doping for titanium oxide nanotubes on the photocatalytic activity toward water splitting under visible light irradiation

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2018.06.039 ◽

2018 ◽

Vol 554 ◽

pp. 100-109 ◽

Cited By ~ 15

Author(s):

Mohamed S. Mahmoud ◽

Enas Ahmed ◽

A.A. Farghali ◽

A.H. Zaki ◽

Emad A.M. Abdelghani ◽

...

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Titanium Oxide ◽

Water Splitting ◽

Visible Light Irradiation ◽

Light Irradiation ◽

Cd Doping ◽

Titanium Oxide Nanotubes

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Development of Anodic Titanium Oxide Nanotubes Applied to a pH Sensor with Amperometric and Potentioimetric Methods

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.528.10 ◽

2012 ◽

Vol 528 ◽

pp. 10-13 ◽

Cited By ~ 1

Author(s):

Hsiang Ching Lee ◽

Li Fan Zhang ◽

Cheng Hsun Lu ◽

Jyh Ling Lin ◽

Yuan Lung Chin ◽

...

Keyword(s):

Titanium Oxide ◽

Room Temperature ◽

Ph Sensor ◽

Pure Titanium ◽

Potentiometric Method ◽

Ph Response ◽

Anodic Titanium Oxide ◽

Titanium Oxide Nanotubes ◽

Amperometric Method ◽

Anodized Titanium

The purpose of this study was to develop the anodized titanium oxide nanotubes (ATONs) as a pH electrode with amperometric and potentiometric method. Titanium oxide nanotubes film was produced on pure titanium piece by titanium anodization at room temperature. The best one ATONs electrode has a linear pH response approximately 53 mV/pH with potentiometric method and 13 A/pH with amperometric method in the concentration range between pH 2 and 12.

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PREPARATION OF HIGH-ORDERLY TIO2 NANOTUBES IN DIFFERENT CONDITIONS AND ELECTROLYTE SOLUTIONS

International Journal of Modern Physics B ◽

10.1142/s0217979207044858 ◽

2007 ◽

Vol 21 (18n19) ◽

pp. 3506-3510 ◽

Cited By ~ 1

Author(s):

YUNHUAI ZHANG ◽

FU HU ◽

PENG XIAO ◽

XIAOYAN FAN

Keyword(s):

Titanium Oxide ◽

Structural Properties ◽

Anodic Oxidation ◽

Tio2 Nanotubes ◽

Ph Value ◽

Pure Titanium ◽

Titanium Substrate ◽

Electrolyte Solutions ◽

Organic Solutions ◽

Better Than

High-orderly nanotubes of titania were fabricated by anodic oxidation of pure titanium substrate in different electrolytes containing fluoride. Different morphological nanotubes of titania were obtained through controlling the different pH value of inorganic electrolytes, and it was found that nanotubes of titanium oxide would not formed when pH value was above 6. The morphological and structural properties of nanotublar products were characterized by SEM. The synthesized nanotubes of titania in organic electrolytic solutions containing fluoride was of 60 μm in length. The experiments demonstrated the length and orderliness of nanotubes of titanium oxide in organic solutions were much better than those in inorganic solutions.

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Fabrication of copper decorated tungsten oxide–titanium oxide nanotubes by photochemical deposition technique and their photocatalytic application under visible light

Applied Surface Science ◽

10.1016/j.apsusc.2015.09.015 ◽

2015 ◽

Vol 357 ◽

pp. 160-166 ◽

Cited By ~ 96

Author(s):

Mohamad Mohsen Momeni

Keyword(s):

Visible Light ◽

Tungsten Oxide ◽

Titanium Oxide ◽

Deposition Technique ◽

Titanium Oxide Nanotubes ◽

Photocatalytic Application ◽

Photochemical Deposition

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In vitro Behaviour of Alumina-Hydroxiapatite Composites Coatings

Revista de Chimie ◽

10.37358/rc.18.6.6336 ◽

2018 ◽

Vol 69 (6) ◽

pp. 1416-1418

Author(s):

Alexandru Szabo ◽

Ilare Bordeasu ◽

Ion Dragos Utu ◽

Ion Mitelea

Keyword(s):

Pure Titanium ◽

Titanium Substrate ◽

High Strength ◽

Biological Properties ◽

Commercially Pure Titanium ◽

Hvof Spraying ◽

Before And After ◽

Sbf Solution ◽

Oxygen Fuel

Hydroxyapatite (HA) is a very common material used for biomedical applications. Usually, in order to improve its poor mechanical properties is combined or coated with other high-strength materials.The present paper reports the manufacturing and the biocompatibility behaviour of two different biocomposite coatings consisting of alumina (Al2O3) and hydroxyapatite (HA) using the high velocity oxygen fuel (HVOF) spraying method which were deposited onto the surface of a commercially pure titanium substrate. The biological properties of the Al2O3-HA materials were evaluated by in vitro studies. The morphology of the coatings before and after their immersing in the simulated body fluid (SBF) solution was characterized by scanning electron microscopy (SEM). The results showed an important germination of the biologic hydroxyapatite crystallite on the surface of both coatings.

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