TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium
The literature largely reports titania nanotubes (NTs), a standout component in nanomaterials with exceptional charge transport and carrier lifetime properties. We talked about how to make highly ordered, vertically oriented titanium dioxide (TiO2) nanotube arrays in a one-step potentiostatic anodiz...
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Elsevier
2024-10-01
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| Series: | Results in Surfaces and Interfaces |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666845924001326 |
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| author | V.S. Jim Abish A. Charles Hepzy Roy D. Jonas Davidson D. Henry Raja P. Sakthivel |
| author_facet | V.S. Jim Abish A. Charles Hepzy Roy D. Jonas Davidson D. Henry Raja P. Sakthivel |
| author_sort | V.S. Jim Abish |
| collection | DOAJ |
| description | The literature largely reports titania nanotubes (NTs), a standout component in nanomaterials with exceptional charge transport and carrier lifetime properties. We talked about how to make highly ordered, vertically oriented titanium dioxide (TiO2) nanotube arrays in a one-step potentiostatic anodization of titanium in an ethylene glycol (EG) electrolyte that also has water and sodium fluoride. This study analyzed the effect of anodization voltage on the formation of TiO2 nanotubes. We used field emission scanning electron microscopy (FESEM) and X-ray diffractometer (XRD) to characterize the morphology and structure of TiO2 NTs. Optical studies using UV–Vis diffuse reflectance and photoluminescence spectra also showed that changing the anodization voltage changes the band gap and the way electron-hole pairs recombine. The synthesis of uniform nanotube arrays and their crystal structure led us to the conclusion that 30 V was an ideal anodization potential exclusively for NT formation. The electrocatalytic activity increases as the sample is anodized at 50 V. Due to the crystal defect, this exhibits better oxygen evolution reaction (OER) activity in 1.0 M KOH electrolyte at 1.736 V vs. reversible hydrogen electrode (RHE) at a current density of less than 10 mA cm−2. |
| format | Article |
| id | doaj-art-c9a2eb2f58e54e899f704a257e5ea51b |
| institution | Kabale University |
| issn | 2666-8459 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Elsevier |
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| series | Results in Surfaces and Interfaces |
| spelling | doaj-art-c9a2eb2f58e54e899f704a257e5ea51b2024-12-02T05:06:58ZengElsevierResults in Surfaces and Interfaces2666-84592024-10-0117100312TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline mediumV.S. Jim Abish0A. Charles Hepzy Roy1D. Jonas Davidson2D. Henry Raja3P. Sakthivel4Department of Physics, Scott Christian College, Nagercoil, 629003, Tamil Nadu, India; Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamilnadu, IndiaDepartment of Physics, Scott Christian College, Nagercoil, 629003, Tamil Nadu, India; Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamilnadu, IndiaCSIR-CECRI, Karaikudi, 630003, Tamil Nadu, IndiaDepartment of Physics, Scott Christian College, Nagercoil, 629003, Tamil Nadu, India; Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamilnadu, India; Corresponding author. Department of Physics, Scott Christian College, Nagercoil, 629003, Tamil Nadu, India.Centre for Materials Science, Department of Science and Humanities, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, 641 021, Tamil Nadu, India; Corresponding author.The literature largely reports titania nanotubes (NTs), a standout component in nanomaterials with exceptional charge transport and carrier lifetime properties. We talked about how to make highly ordered, vertically oriented titanium dioxide (TiO2) nanotube arrays in a one-step potentiostatic anodization of titanium in an ethylene glycol (EG) electrolyte that also has water and sodium fluoride. This study analyzed the effect of anodization voltage on the formation of TiO2 nanotubes. We used field emission scanning electron microscopy (FESEM) and X-ray diffractometer (XRD) to characterize the morphology and structure of TiO2 NTs. Optical studies using UV–Vis diffuse reflectance and photoluminescence spectra also showed that changing the anodization voltage changes the band gap and the way electron-hole pairs recombine. The synthesis of uniform nanotube arrays and their crystal structure led us to the conclusion that 30 V was an ideal anodization potential exclusively for NT formation. The electrocatalytic activity increases as the sample is anodized at 50 V. Due to the crystal defect, this exhibits better oxygen evolution reaction (OER) activity in 1.0 M KOH electrolyte at 1.736 V vs. reversible hydrogen electrode (RHE) at a current density of less than 10 mA cm−2.http://www.sciencedirect.com/science/article/pii/S2666845924001326Titania nanotubesElectrochemical anodizationSodium fluorideFormation mechanismOxygen evolution reaction |
| spellingShingle | V.S. Jim Abish A. Charles Hepzy Roy D. Jonas Davidson D. Henry Raja P. Sakthivel TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium Results in Surfaces and Interfaces Titania nanotubes Electrochemical anodization Sodium fluoride Formation mechanism Oxygen evolution reaction |
| title | TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| title_full | TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| title_fullStr | TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| title_full_unstemmed | TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| title_short | TiO2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| title_sort | tio2 nanotubes as enhanced electrocatalytic oxygen evolution reaction catalyst for water splitting in alkaline medium |
| topic | Titania nanotubes Electrochemical anodization Sodium fluoride Formation mechanism Oxygen evolution reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2666845924001326 |
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