Electrochemical tuning of titania nanotube morphology in inhibitor electrolytes
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| Title: | Electrochemical tuning of titania nanotube morphology in inhibitor electrolytes |
|---|---|
| Authors: | Anitha, V.C.1, Menon, Deepthy1, Nair, Shantikumar V.1, Prasanth, R. prasanthr@aims.amrita.edu |
| Source: | Electrochimica Acta. Apr2010, Vol. 55 Issue 11, p3703-3713. 11p. |
| Subjects: | Titanium dioxide, Nanotubes, Electrolytes, Anodic oxidation of metals, Impedance spectroscopy, Dimethyl sulfoxide, Hydrofluoric acid, Ethylene glycol |
| Abstract: | Abstract: The electrochemical behavior of fluorine containing electrolytes and its influence in controlling the lateral dimensions of TiO2 nanotubes is thoroughly investigated. Potentiostatic anodization is carried out in three different electrolytes, viz., aqueous hydrofluoric acid (HF), HF containing dimethyl sulphoxide (DMSO) and HF containing ethylene glycol (EG). The experiments were carried out over a broad voltage range from 2 to 200V in 0.1–48wt% HF concentrations and different electrolytic compositions for anodization times ranging from 5s to 70h. The chemistry that dictates how the nature of electrolytes influences the morphology of nanotubes is discussed. Electrochemical impedance spectra were recorded for varying compositions of all the electrolytes. It was observed that composition of the electrolyte and its fluorine inhibiting nature has significant impact on nanotube formation as well as in controlling the aspect ratio. The inhibiting nature of EG is helpful in holding fluorine at the titanium anode, thereby allowing controlled etching at appropriate voltages. Thus our study demonstrates that HF containing EG is a promising electrolytic system providing wide tunability in lateral dimensions and aspect ratio of TiO2 nanotubes by systematically varying the anodization voltage and electrolyte composition. [Copyright &y& Elsevier] |
| Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 48730241 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Electrochemical tuning of titania nanotube morphology in inhibitor electrolytes – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Anitha%2C+V%2EC%2E%22">Anitha, V.C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Menon%2C+Deepthy%22">Menon, Deepthy</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nair%2C+Shantikumar+V%2E%22">Nair, Shantikumar V.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Prasanth%2C+R%2E%22">Prasanth, R.</searchLink><i> prasanthr@aims.amrita.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Apr2010, Vol. 55 Issue 11, p3703-3713. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Nanotubes%22">Nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytes%22">Electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Anodic+oxidation+of+metals%22">Anodic oxidation of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Impedance+spectroscopy%22">Impedance spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Dimethyl+sulfoxide%22">Dimethyl sulfoxide</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrofluoric+acid%22">Hydrofluoric acid</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The electrochemical behavior of fluorine containing electrolytes and its influence in controlling the lateral dimensions of TiO2 nanotubes is thoroughly investigated. Potentiostatic anodization is carried out in three different electrolytes, viz., aqueous hydrofluoric acid (HF), HF containing dimethyl sulphoxide (DMSO) and HF containing ethylene glycol (EG). The experiments were carried out over a broad voltage range from 2 to 200V in 0.1–48wt% HF concentrations and different electrolytic compositions for anodization times ranging from 5s to 70h. The chemistry that dictates how the nature of electrolytes influences the morphology of nanotubes is discussed. Electrochemical impedance spectra were recorded for varying compositions of all the electrolytes. It was observed that composition of the electrolyte and its fluorine inhibiting nature has significant impact on nanotube formation as well as in controlling the aspect ratio. The inhibiting nature of EG is helpful in holding fluorine at the titanium anode, thereby allowing controlled etching at appropriate voltages. Thus our study demonstrates that HF containing EG is a promising electrolytic system providing wide tunability in lateral dimensions and aspect ratio of TiO2 nanotubes by systematically varying the anodization voltage and electrolyte composition. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.electacta.2009.12.096 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 3703 Subjects: – SubjectFull: Titanium dioxide Type: general – SubjectFull: Nanotubes Type: general – SubjectFull: Electrolytes Type: general – SubjectFull: Anodic oxidation of metals Type: general – SubjectFull: Impedance spectroscopy Type: general – SubjectFull: Dimethyl sulfoxide Type: general – SubjectFull: Hydrofluoric acid Type: general – SubjectFull: Ethylene glycol Type: general Titles: – TitleFull: Electrochemical tuning of titania nanotube morphology in inhibitor electrolytes Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Anitha, V.C. – PersonEntity: Name: NameFull: Menon, Deepthy – PersonEntity: Name: NameFull: Nair, Shantikumar V. – PersonEntity: Name: NameFull: Prasanth, R. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 00134686 Numbering: – Type: volume Value: 55 – Type: issue Value: 11 Titles: – TitleFull: Electrochimica Acta Type: main |
| ResultId | 1 |
