Synthesis of TiO2 Nanotube Arrays in NaOH Added Ethylene Glycol Electrolyte and the Effect of Annealing Temperature on the Nanotube Arrays to their Photocurrent Performance

Mustaffa Ali Azhar Taib; G. Kawamura; Atsunori Matsuda; Mariatti Jaafar; Khairunisak Abdul Razak; Zainovia Lockman

doi:10.4028/www.scientific.net/KEM.701.28

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 701Synthesis of TiO2 Nanotube Arrays in NaOH Added...

Synthesis of TiO₂ Nanotube Arrays in NaOH Added Ethylene Glycol Electrolyte and the Effect of Annealing Temperature on the Nanotube Arrays to their Photocurrent Performance

Abstract:

The present study employs NaOH as an oxygen source in fluorinated ethylene glycol (EG) electrolyte for the formation of titanium dioxide nanotube arrays (TiO₂ NTs) by anodic process. The nanotube formed were 125 nm in diameter with length of ~ 7 µm after 30 min of anodization. They were then annealed to study the effect of annealing temperature on the photocurrent generated by the TiO₂ NTs. It is found that TiO₂ NTs annealed at 400 °C has the highest photocurrent (0.716 mA cm^-2 at 0.5 V vs Ag/AgCl). This is attributed to the crystallinity (mostly anatase) of the TiO₂ NTs as well as the nanotubular structure which retains at this temperature but not at higher temperature.

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Periodical:

Key Engineering Materials (Volume 701)

Pages:

28-32

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.701.28

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Online since:

July 2016

Authors:

Mustaffa Ali Azhar Taib*, G. Kawamura, Atsunori Matsuda, Mariatti Jaafar, Khairunisak Abdul Razak, Zainovia Lockman

Keywords:

Additive, Anodization, NaOH, Photocurrent, TiO₂ Nanotubes

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