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In Situ Grazing Incidence X-ray Total Scattering Reveals the Effect of the “Two-Step” Method for the Anodization of Aluminum Surfaces

Magnard, Nicolas P.L. ; Abbondanza, Giuseppe LU ; Junkers, Laura S. ; Glatthaar, Lorena ; Grespi, Andrea LU orcid ; Spriewald Luciano, Alexander ; Igoa Saldaña, Fernando ; Dippel, Ann Christin ; Vinogradov, Nikolay LU orcid and Over, Herbert , et al. (2025) In ACS Applied Materials and Interfaces 17(33). p.46887-46898
Abstract

Thanks to its ability to form a lattice of self-ordered nanosized pores, nanoporous anodic aluminum oxide (NP-AAO) is a promising material with diverse applications, for example, as membrane for the controlled deposition of catalysts. NP-AAO is obtained by the anodization of an aluminum substrate under specific pH and voltage conditions. However, the growth mechanism of the oxide is still under debate. We shed light on this process by investigating structural changes at the atomic scale using pair distribution function (PDF) analysis. We thus performed in situ X-ray total scattering experiments under grazing incidence conditions during the anodization of aluminum substrates exhibiting different crystallographic facets. By doing so, we... (More)

Thanks to its ability to form a lattice of self-ordered nanosized pores, nanoporous anodic aluminum oxide (NP-AAO) is a promising material with diverse applications, for example, as membrane for the controlled deposition of catalysts. NP-AAO is obtained by the anodization of an aluminum substrate under specific pH and voltage conditions. However, the growth mechanism of the oxide is still under debate. We shed light on this process by investigating structural changes at the atomic scale using pair distribution function (PDF) analysis. We thus performed in situ X-ray total scattering experiments under grazing incidence conditions during the anodization of aluminum substrates exhibiting different crystallographic facets. By doing so, we were able to track the evolution of the local structure of aluminum oxide species forming at the oxide-electrolyte interface over time.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
amorphous oxide, grazing incidence, in situstudies, NP-AAO, X-ray total scattering
in
ACS Applied Materials and Interfaces
volume
17
issue
33
pages
12 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:40789748
  • scopus:105013886203
ISSN
1944-8244
DOI
10.1021/acsami.5c05251
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Authors. Published by American Chemical Society
id
717782be-f0a1-4823-a721-59741d342170
date added to LUP
2025-10-01 08:45:37
date last changed
2025-10-29 11:31:53
@article{717782be-f0a1-4823-a721-59741d342170,
  abstract     = {{<p>Thanks to its ability to form a lattice of self-ordered nanosized pores, nanoporous anodic aluminum oxide (NP-AAO) is a promising material with diverse applications, for example, as membrane for the controlled deposition of catalysts. NP-AAO is obtained by the anodization of an aluminum substrate under specific pH and voltage conditions. However, the growth mechanism of the oxide is still under debate. We shed light on this process by investigating structural changes at the atomic scale using pair distribution function (PDF) analysis. We thus performed in situ X-ray total scattering experiments under grazing incidence conditions during the anodization of aluminum substrates exhibiting different crystallographic facets. By doing so, we were able to track the evolution of the local structure of aluminum oxide species forming at the oxide-electrolyte interface over time.</p>}},
  author       = {{Magnard, Nicolas P.L. and Abbondanza, Giuseppe and Junkers, Laura S. and Glatthaar, Lorena and Grespi, Andrea and Spriewald Luciano, Alexander and Igoa Saldaña, Fernando and Dippel, Ann Christin and Vinogradov, Nikolay and Over, Herbert and Jensen, Kirsten M.Ø. and Lundgren, Edvin}},
  issn         = {{1944-8244}},
  keywords     = {{amorphous oxide; grazing incidence; in situstudies; NP-AAO; X-ray total scattering}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{33}},
  pages        = {{46887--46898}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Applied Materials and Interfaces}},
  title        = {{<i>In Situ</i> Grazing Incidence X-ray Total Scattering Reveals the Effect of the “Two-Step” Method for the Anodization of Aluminum Surfaces}},
  url          = {{http://dx.doi.org/10.1021/acsami.5c05251}},
  doi          = {{10.1021/acsami.5c05251}},
  volume       = {{17}},
  year         = {{2025}},
}