Structural Characterization and Visible Light-Induced Photoelectrochemical Performance of Fe-Sensitized TiO2 Nanotube Arrays Prepared via Electrodeposition
Surface modification of TiO2 nanotube arrays via metal doping is one of the approaches to narrow the wide bandgap of TiO2 in order to increase its adsorption to the visible region. The present work focuses on the fabrication of a Fe-sensitized TiO2 nanotube arrays (Fe- TNT) photoanode. Ordered Fe...
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Malaysian Institute of Chemistry
2021
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my.unimas.ir.355682021-07-08T07:43:00Z http://ir.unimas.my/id/eprint/35568/ Structural Characterization and Visible Light-Induced Photoelectrochemical Performance of Fe-Sensitized TiO2 Nanotube Arrays Prepared via Electrodeposition Devagi, Kanakaraju Lim Ying, Chin Najaa, Mustaffa Asmaa Kadim, Ayal Lim Ying, Pei QD Chemistry Surface modification of TiO2 nanotube arrays via metal doping is one of the approaches to narrow the wide bandgap of TiO2 in order to increase its adsorption to the visible region. The present work focuses on the fabrication of a Fe-sensitized TiO2 nanotube arrays (Fe- TNT) photoanode. Ordered Fe-TNTs were successfully synthesized using a facile two-step electrochemical method by varying the deposition voltage (2-4 V). The morphology, structure, composition, and visible light response were characterized by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), UV-Vis diffusion reflection spectroscopy (DRS), and photoelectrochemical (PEC) test. The XRD investigation demonstrated that the sensitization of Fe did not destroy the nanotube array structure, and the Fe-TNTs had an anatase phase composed of cubic-like particles at higher deposition voltages. The UV–Vis absorption spectra of the Fe-TNTs showed a redshift of photoresponse towards visible light. Such a redshift was characterized by a decrease in bandgap energy and the photo efficiency was enhanced. The optimal photoelectrochemical performance was observed at 2.5 V deposition voltage for 10 minutes and surpassed that of pristine titania nanotube arrays. The present work demonstrates feasible modification of TiO2 with Fe as a potential photoanode in solar conversion devices. Malaysian Institute of Chemistry 2021-06-30 Article PeerReviewed text en http://ir.unimas.my/id/eprint/35568/1/Malaysian%20Journal%20of%20Chemistry%202021_abstract%20DrDevagi.pdf Devagi, Kanakaraju and Lim Ying, Chin and Najaa, Mustaffa and Asmaa Kadim, Ayal and Lim Ying, Pei (2021) Structural Characterization and Visible Light-Induced Photoelectrochemical Performance of Fe-Sensitized TiO2 Nanotube Arrays Prepared via Electrodeposition. Malaysian Journal of Chemistry, 23 (2). pp. 173-182. ISSN 2550-1658 https://ikm.org.my/ojs/index.php/MJChem/article/view/1011 |
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QD Chemistry Devagi, Kanakaraju Lim Ying, Chin Najaa, Mustaffa Asmaa Kadim, Ayal Lim Ying, Pei Structural Characterization and Visible Light-Induced Photoelectrochemical Performance of Fe-Sensitized TiO2 Nanotube Arrays Prepared via Electrodeposition |
description |
Surface modification of TiO2 nanotube arrays via metal doping is one of the approaches to
narrow the wide bandgap of TiO2 in order to increase its adsorption to the visible region.
The present work focuses on the fabrication of a Fe-sensitized TiO2 nanotube arrays (Fe-
TNT) photoanode. Ordered Fe-TNTs were successfully synthesized using a facile two-step
electrochemical method by varying the deposition voltage (2-4 V). The morphology,
structure, composition, and visible light response were characterized by field-emission
scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy-dispersive X-ray
spectroscopy (EDX), UV-Vis diffusion reflection spectroscopy (DRS), and
photoelectrochemical (PEC) test. The XRD investigation demonstrated that the sensitization
of Fe did not destroy the nanotube array structure, and the Fe-TNTs had an anatase phase
composed of cubic-like particles at higher deposition voltages. The UV–Vis absorption
spectra of the Fe-TNTs showed a redshift of photoresponse towards visible light. Such a
redshift was characterized by a decrease in bandgap energy and the photo efficiency was
enhanced. The optimal photoelectrochemical performance was observed at 2.5 V deposition
voltage for 10 minutes and surpassed that of pristine titania nanotube arrays. The present
work demonstrates feasible modification of TiO2 with Fe as a potential photoanode in solar
conversion devices. |
format |
Article |
author |
Devagi, Kanakaraju Lim Ying, Chin Najaa, Mustaffa Asmaa Kadim, Ayal Lim Ying, Pei |
author_facet |
Devagi, Kanakaraju Lim Ying, Chin Najaa, Mustaffa Asmaa Kadim, Ayal Lim Ying, Pei |
author_sort |
Devagi, Kanakaraju |
title |
Structural Characterization and Visible Light-Induced
Photoelectrochemical Performance of Fe-Sensitized TiO2
Nanotube Arrays Prepared via Electrodeposition |
title_short |
Structural Characterization and Visible Light-Induced
Photoelectrochemical Performance of Fe-Sensitized TiO2
Nanotube Arrays Prepared via Electrodeposition |
title_full |
Structural Characterization and Visible Light-Induced
Photoelectrochemical Performance of Fe-Sensitized TiO2
Nanotube Arrays Prepared via Electrodeposition |
title_fullStr |
Structural Characterization and Visible Light-Induced
Photoelectrochemical Performance of Fe-Sensitized TiO2
Nanotube Arrays Prepared via Electrodeposition |
title_full_unstemmed |
Structural Characterization and Visible Light-Induced
Photoelectrochemical Performance of Fe-Sensitized TiO2
Nanotube Arrays Prepared via Electrodeposition |
title_sort |
structural characterization and visible light-induced
photoelectrochemical performance of fe-sensitized tio2
nanotube arrays prepared via electrodeposition |
publisher |
Malaysian Institute of Chemistry |
publishDate |
2021 |
url |
http://ir.unimas.my/id/eprint/35568/1/Malaysian%20Journal%20of%20Chemistry%202021_abstract%20DrDevagi.pdf http://ir.unimas.my/id/eprint/35568/ https://ikm.org.my/ojs/index.php/MJChem/article/view/1011 |
_version_ |
1705060456680390656 |
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13.188404 |