Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring

N. Holubowitch; L. C. Nagle; J. F. Rohan

doi:10.1016/j.ssi.2012.03.016

Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring

N. Holubowitch
, L. C. Nagle
, J. F. Rohan

University College Cork

Research output: Contribution to journal › Article › peer-review

Abstract

The growth of thin porous anodic aluminum oxide (AAO) films on silicon by anodizing Al on Ti/Au/Si and Ti/Pt/Si substrates in oxalic acid was demonstrated. Removal of the Al ₂O ₃ barrier layer was effected by selective chemical etching in H ₃PO ₄ and a reversed bias method in the anodizing solution. Ion transport and the influence of the Ti adhesion layer at the oxide-metal interface during the critical stages of anodization and pore opening were investigated. The AAO films may be exploited as templates in the creation of silicon-integrated nanostructured wire arrays. Electrodeposition of Pt into the AAO template yielded a nanowire array with superior methanol oxidation activity that can be integrated in a micro direct methanol fuel cell.

Original language	English
Pages (from-to)	110-113
Number of pages	4
Journal	Solid State Ionics
Volume	216
DOIs	https://doi.org/10.1016/j.ssi.2012.03.016
Publication status	Published - 28 May 2012

Keywords

AAO template
Barrier layer
DMFC
Pt nanowire array
Si integration
Ti adhesion layer

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ssi.2012.03.016

https://hdl.handle.net/10468/1073Licence: CC BY-NC-ND

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title = "Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring",

abstract = "The growth of thin porous anodic aluminum oxide (AAO) films on silicon by anodizing Al on Ti/Au/Si and Ti/Pt/Si substrates in oxalic acid was demonstrated. Removal of the Al 2O 3 barrier layer was effected by selective chemical etching in H 3PO 4 and a reversed bias method in the anodizing solution. Ion transport and the influence of the Ti adhesion layer at the oxide-metal interface during the critical stages of anodization and pore opening were investigated. The AAO films may be exploited as templates in the creation of silicon-integrated nanostructured wire arrays. Electrodeposition of Pt into the AAO template yielded a nanowire array with superior methanol oxidation activity that can be integrated in a micro direct methanol fuel cell.",

keywords = "AAO template, Barrier layer, DMFC, Pt nanowire array, Si integration, Ti adhesion layer",

author = "N. Holubowitch and Nagle, \{L. C.\} and Rohan, \{J. F.\}",

year = "2012",

month = may,

day = "28",

doi = "10.1016/j.ssi.2012.03.016",

language = "English",

volume = "216",

pages = "110--113",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring

AU - Holubowitch, N.

AU - Nagle, L. C.

AU - Rohan, J. F.

PY - 2012/5/28

Y1 - 2012/5/28

N2 - The growth of thin porous anodic aluminum oxide (AAO) films on silicon by anodizing Al on Ti/Au/Si and Ti/Pt/Si substrates in oxalic acid was demonstrated. Removal of the Al 2O 3 barrier layer was effected by selective chemical etching in H 3PO 4 and a reversed bias method in the anodizing solution. Ion transport and the influence of the Ti adhesion layer at the oxide-metal interface during the critical stages of anodization and pore opening were investigated. The AAO films may be exploited as templates in the creation of silicon-integrated nanostructured wire arrays. Electrodeposition of Pt into the AAO template yielded a nanowire array with superior methanol oxidation activity that can be integrated in a micro direct methanol fuel cell.

AB - The growth of thin porous anodic aluminum oxide (AAO) films on silicon by anodizing Al on Ti/Au/Si and Ti/Pt/Si substrates in oxalic acid was demonstrated. Removal of the Al 2O 3 barrier layer was effected by selective chemical etching in H 3PO 4 and a reversed bias method in the anodizing solution. Ion transport and the influence of the Ti adhesion layer at the oxide-metal interface during the critical stages of anodization and pore opening were investigated. The AAO films may be exploited as templates in the creation of silicon-integrated nanostructured wire arrays. Electrodeposition of Pt into the AAO template yielded a nanowire array with superior methanol oxidation activity that can be integrated in a micro direct methanol fuel cell.

KW - AAO template

KW - Barrier layer

KW - DMFC

KW - Pt nanowire array

KW - Si integration

KW - Ti adhesion layer

UR - https://www.scopus.com/pages/publications/84861097379

U2 - 10.1016/j.ssi.2012.03.016

DO - 10.1016/j.ssi.2012.03.016

M3 - Article

AN - SCOPUS:84861097379

SN - 0167-2738

VL - 216

SP - 110

EP - 113

JO - Solid State Ionics

JF - Solid State Ionics

ER -

Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring

Abstract

Keywords

UN SDGs

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