Study on the formation micromechanism of TiO2 nanotubes on pure titanium and the role of fluoride ions in electrolyte solutions

2011 ◽  
Vol 519 (15) ◽  
pp. 5150-5155 ◽  
Author(s):  
Y.Q. Liang ◽  
Z.D. Cui ◽  
S.L. Zhu ◽  
X.J. Yang
Keyword(s):  
Tio2 Nanotubes ◽  
Pure Titanium ◽  
Electrolyte Solutions ◽  
Fluoride Ions

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

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3506-3510 ◽  
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.

The role of fluoride ions in reduction-oxidation equilibria in CsClKClNaClK2NbF7 melts

1992 ◽  
Vol 59 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Z. Alimova ◽  
E. Polyakov ◽  
L. Polyakova ◽  
V. Kremenetskiy
Keyword(s):  
Fluoride Ions

Wettability and osteoblastic cell adhesion on ultrapolished commercially pure titanium surfaces: the role of the oxidation and pollution states

2014 ◽  
Vol 28 (12) ◽  
pp. 1207-1218 ◽  
Author(s):  
Miguel A. Fernández-Rodríguez ◽  
Alda Y. Sánchez-Treviño ◽  
Elvira De Luna-Bertos ◽  
Javier Ramos-Torrecillas ◽  
Olga García-Martínez ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Pure Titanium ◽  
Osteoblastic Cell ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Titanium Surfaces

scholarly journals The Effect of Weak Electrolyte Solutions on the Hatching Rate of the Eggs of Tricho-Strongylus Retortaeformis (Zeder) and its Interpretation in Terms of a Proposed Hatching Mechanism of Strongyloid Eggs

1958 ◽  
Vol 35 (3) ◽  
pp. 584-601
Author(s):  
P. A. G. WILSON
Keyword(s):  
Water Permeability ◽  
Electrolyte Solutions ◽  
Hatching Rate ◽  
Natural Conditions ◽  
Ionic Solutions ◽  
Rate Of Increase ◽  
Egg Membrane ◽  
Hatching Eggs ◽  
Colligative Properties

1. The influence of solutions of NaCl on the hatching of eggs of Trichostrongylus retortaeformis is studied. It is shown that the effects are not the consequence of colligative properties, but are related to ionic phenomena. 0.05 N-NaCl slows down the rate of hatch without impairing the ultimate ‘hatchability’ of the eggs. Processes of development up to hatching are not slowed down. 2. The effect demonstrated in the case of NaCl is shown to be shared by eight other electrolytes, the depression in the rate of hatch being proportional to the mobility of the ions in solution. On the assumption that the effect of the ions is due to a penetration of the egg membrane(s) the rate of entry is shown to be controlled by the speed of the slower ion in any one salt. 3. The influence of NaCl on the permeability of hatching eggs to water is studied. It is shown that the rate of increase in permeability is slowed down sufficiently in NaCl to control the rate of hatch. The inference that water permeability is a necessary prerequisite for hatching is made, a further hypothetical process being invoked to account for the rate of hatch in the absence of NaCl, since it is not then controlled by changes in water permeability. 4. The probability that the net effect of ionic solutions on the eggs is one concerned with the rate of breakdown of the inner wax-like layer of the egg is strengthened by experiments demonstrating that the depressing influence of NaCl is antagonized by ‘Teepol’, though the comparable influence of other, non-emulsifying, compounds cannot be explained. 5. The role of water permeability in the hatching mechanism is investigated. 6. A hatching mechanism of strongyloid eggs is proposed which involves two processes, the first dependent upon the osmotic relationships of the unhatched larva to its environment, the second being some sort of chemical weakening of the outer shell. 7. It is suggested that the effect of ions on hatching rate assists the ‘embryonated egg’ to survive under natural conditions when the hatched first-stage larva might otherwise be destroyed by desiccation.

The Effect of Preparation Temperature of Electrolytes on Undoped and Ag-Doped TiO2 Nanotube Structures

2016 ◽  
Vol 860 ◽  
pp. 7-11 ◽  
Author(s):  
Somkuan Photharin ◽  
Buagun Samran ◽  
Rinnatha Vongwatthaporn ◽  
Narongsak Kodtharin ◽  
Ramida Chaiyarat ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electrolyte Solution ◽  
Pure Titanium ◽  
Silver Ions ◽  
Ammonium Fluoride ◽  
Electrolyte Solutions ◽  
Nanotube Arrays ◽  
X Ray Diffraction ◽  
Preparation Temperature ◽  
X Ray

In this work, we present the effect of preparation temperature of electrolytes for fabricating undoped and silver (Ag) doped titanium dioxide (TiO2) nanotubes by the electrochemical anodic oxidation of pure titanium sheets in electrolytes, mixtures of ethylene glycol (EG), ammonium fluoride (NH4F) and deionized water, that contain with different of silver ions. Heat treatment of electrolytes was carried out at 100 °C during preparation process. The morphology and structure of prepared nanotubes were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The structures of TiO2 nanotubes obtained from heat treatment and non-heat treatment of electrolyte solutions and adding silver ions in electrolyte solution are similar. The nanotubes appear in arrays and the diameters of nanotubes were about 92 nm for non-heat treatment electrolyte solution and undoped TiO2 and about 102 nm for heat treatment electrolyte solution and all Ag-doped TiO2 nanotube arrays. When the concentration of silver nitrate (AgNO3) increases, the TiO2 nanotube arrays cracked and are not well arranged.

scholarly journals Role of surface reconstruction on Cu/TiO2 nanotubes for CO2 conversion

2019 ◽  
Vol 255 ◽  
pp. 117754 ◽  
Author(s):  
Chao Liu ◽  
Scott L. Nauert ◽  
Marco A. Alsina ◽  
Dingdi Wang ◽  
Alexander Grant ◽  
...  
Keyword(s):  
Surface Reconstruction ◽  
Tio2 Nanotubes ◽  
Co2 Conversion

The role of phase transformation mechanism on the grain boundary network in a commercially pure titanium

2020 ◽  
Vol 169 ◽  
pp. 110640
Author(s):  
Ehsan Farabi ◽  
Vahid Tari ◽  
Peter D. Hodgson ◽  
Gregory S. Rohrer ◽  
Hossein Beladi
Keyword(s):  
Phase Transformation ◽  
Grain Boundary ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Transformation Mechanism ◽  
Commercially Pure

Role of magnesium doping for ultrafast room temperature crystallization and improved photocatalytic behavior of TiO2 nanotubes

2020 ◽  
Vol 25 ◽  
pp. 203-207 ◽  
Author(s):  
Sinitha B. Nair ◽  
John K. Aijo ◽  
Julie Ann Joseph ◽  
Sadasivan Shaji ◽  
Rachel Reena Philip
Keyword(s):  
Tio2 Nanotubes ◽  
Room Temperature ◽  
Magnesium Doping ◽  
Temperature Crystallization

EBSD Investigation of Cold Rolled and Recrystallized Titanium

2013 ◽  
Vol 753 ◽  
pp. 289-292
Author(s):  
Mariusz Jedrychowski ◽  
Jacek Tarasiuk ◽  
Brigitte Bacroix
Keyword(s):  
Thermomechanical Treatment ◽  
Microstructure Evolution ◽  
Texture Evolution ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Topological Maps ◽  
Air Atmosphere ◽  
Commercially Pure ◽  
Cold Rolled

EBSD investigation of texture and microstructure evolution during a complete thermomechanical treatment of commercially pure titanium (HCP-Ti) is presented. Titanium was cold rolled to reach various degrees of thickness reduction: 20%, 40% and 60%. Next, annealing in air atmosphere was conducted at different conditions to achieve the recrystallized state. EBSD topological maps were measured on RD-TD and RD-ND surface of each sample. Strong heterogeneity of deformed titanium microstructures is described with focus on the important role of twinning mechanisms. Texture evolution in investigated titanium appears to be limited, especially in recrystallized state. However some subtle mechanisms are discussed.

The role of ion-aggregate formation in the calculation of physical properties of electrolyte solutions

2002 ◽  
Vol 194-197 ◽  
pp. 107-122 ◽  
Author(s):  
J. Barthel ◽  
H. Krienke ◽  
R. Neueder ◽  
M.F. Holovko
Keyword(s):  
Physical Properties ◽  
Electrolyte Solutions ◽  
Aggregate Formation
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