Synthesis of ZrO2 Nanotubes by Anodization of Zr Foil

Mary Donnabelle Balela; April Alexa S. Lagarde; Stephen Jann A. Tamayo; Nikko S. Villareal; Ann Marielle Parreno

doi:10.4028/www.scientific.net/AMM.799-800.125

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 799-800Synthesis of ZrO2 Nanotubes by Anodization of Zr...

Synthesis of ZrO₂ Nanotubes by Anodization of Zr Foil

Abstract:

Zirconia (ZrO₂) nanotubes were synthesized by anodization of zirconium (Zr) foil in NH₄Fand (NH₄)₂SO₄aqueous solution. Different surface preparation methods (electropolishing and etching) were applied on the Zr foil prior to anodizaton. In addition, the anodization time and NH₄F concentration were varied. The structure and morphologies of the nanotubes and their crystallinity were confirmed using scanning electron microscope and x-ray diffractometer, respectively. ZrO₂ nanotubes with large diameters and thick walls were formed at lower NH₄F concentration and longer anodization time. On the other hand, smaller nanotubes with thinner walls were produced when the NH₄F concentration was increased. The synthesized nanotubes were predominantly tetragonal ZrO₂ with small amounts of monoclinic ZrO₂.

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Periodical:

Applied Mechanics and Materials (Volumes 799-800)

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125-129

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.799-800.125

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Online since:

October 2015

Authors:

Mary Donnabelle Balela*, April Alexa S. Lagarde, Stephen Jann A. Tamayo, Nikko S. Villareal, Ann Marielle Parreno

Keywords:

(NH₄)₂SO₄, Anodization, Electropolishing, Etching, NH₄F, Zirconia Nanotubes

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