Anodic ZrO2 Nanotube Arrays Formation by Anodisation in Ethylene Glycol with Varying Amount of Water

Nurulhuda Bashirom; Khairunisak Abdul Razak; Tan Wai Kian; Atsunori Matsuda; Zainovia Lockman

doi:10.4028/www.scientific.net/SSP.264.224

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Anodic ZrO₂ Nanotube Arrays Formation by Anodisation in Ethylene Glycol with Varying Amount of Water

Abstract:

Anodisation of zirconium, Zr at 40 V for 60 min in 0.1 wt.% NH₄F/ethylene glycol (EG) added to it 1 ml, 2 ml or 3 ml of water resulted in the formation of self-aligned ZrO₂ nanotube (ZNT) arrays. Water content did not affect the length and diameter of the ZNTs but was influencing surface etching whereby better surface etching was observed for sample anodised in 3 ml-water/NH₄F/EG. From transmission electron microcopy (TEM) image, the ZNTs were found to have an outer diameter of ~ 40 nm and wall thickness of 10 nm. Annealing at 400 °C was resulted in monoclinic (M-ZrO₂) and tetragonal (T-ZrO₂) formation, but at 600 °C M-ZrO₂ dominates. Cr(VI) reduction is higher for ZNTs annealed at 400 °C compared to 600 °C sample.

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Periodical:

Solid State Phenomena (Volume 264)

Pages:

224-227

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.264.224

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Online since:

September 2017

Authors:

Nurulhuda Bashirom, Khairunisak Abdul Razak, Tan Wai Kian, Atsunori Matsuda, Zainovia Lockman*

Keywords:

Anodisation, Hexavalent Chromium, Nanotubes, Photoreduction, Zirconia

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