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Nanomaterials
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Fabrication and Applications of Nanostructured Anodic Oxides
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Fabrication and Applications of Nanostructured Anodic Oxides

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 8399

Special Issue Editors

Dr. Wojciech J. Stępniowski

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Guest Editor
Department of Functional Materials and Hydrogen Technology, Faculty of Advanced Technologies and Chemistry, Military University of Technology, 2 Kaliskiego Street, 00908 Warsaw, Poland
Interests: anodizing, photocatalysis; corrosion; anodizing; nanopores; bimetallic catalysts
Special Issues, Collections and Topics in MDPI journals
Dr. Anna M. Brudzisz

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Guest Editor
Institute of Materials Engineering, Military University of Technology, Warsaw, Poland
Interests: electrochemistry; electrocatalysis; nanomaterials; anodizing
Dr. Ewa Wierzbicka

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Guest Editor
Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
Interests: anodic oxide layers; metal nanostructures; corrosion; photocatalysis; plasma electrolytic oxidation (PEO); photoelectrochemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Damian Giziński

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Guest Editor
Institute of Materials Engineering, Military University of Technology, Warsaw, Poland
Interests: heterogeneous catalysis; anodizing; nanomaterials; electrocatalysis

Special Issue Information

Dear Colleagues,

The anodization of metals and alloys, especially aluminum, has been widely utilized in corrosion engineering in recent decades. Since 1995, when the highly ordered formation of nanoporous alumina was invented by Masuda and Fukuda, this method has been intensively researched and has contributed to the development of nanotechnology. Such formed material serves as a template for the nanofabrication of nanowires, nanotubes, and nanodots made of a variety of materials. Today, other metals and alloys, such as titanium, zinc, zirconium, copper, iron, and cobalt, are anodized. Moreover, these nanostructured oxides contribute to the progress of such emerging applications, as renewable energy harvesting, CO2 reduction, solar cells assembly, sensing, and implant materials.

The forthcoming Special Issue will focus on recent advancements in the field of nanostructured anodic oxides. Topics include, but are not limited to:

Fundamentals and mechanism of anodizing;

Characterization of nanostructured anodic oxides;

New experimental conditions for anodizing;

Anodization of new metals and alloys;

Applications of anodically grown oxides;

We invite our colleagues to contribute full papers, reviews, or communications to this Special Issue.

Dr. Wojciech J. Stępniowski
Dr. Anna M. Brudzisz
Dr. Ewa Wierzbicka
Dr. Damian Giziński
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • anodization
  • self-organization
  • nanotechnology
  • nanopores
  • nanowires
  • nanotubes
  • passivation
  • nanofabrication
  • corrosion
  • electrochemistry

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Published Papers (3 papers)

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Research

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9 pages, 34362 KiB  
Article
Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
by Ludovic Cicutto, Jérome Roche and Laurent Arurault
Nanomaterials 2022, 12(5), 845; https://doi.org/10.3390/nano12050845 - 2 Mar 2022
Cited by 1 | Viewed by 2314
Abstract
A search through the literature reveals that the vast majority of studies about aluminum anodizing were conducted at the macroscale (i.e., from cm2 up to m2), while those focused on local anodizing (i.e., on surfaces of less than 1 mm [...] Read more.
A search through the literature reveals that the vast majority of studies about aluminum anodizing were conducted at the macroscale (i.e., from cm2 up to m2), while those focused on local anodizing (i.e., on surfaces of less than 1 mm2) are rare. The last ones either used insulating masks or were conducted in an electrolyte droplet. The present study describes on the one hand a new way to prepare aluminum microelectrodes of conventional disk-shaped geometry, and on the other hand the local anodizing of their respective aluminum micrometric top-disks. The influence of the anodizing voltage on anodic film characteristics (i.e., thickness, growth rate and expansion factor) was studied during local anodizing. Compared with the values reported for macroscopic anodizing, the pore diameter appears to be significantly low and the film growth rate can reach atypically high values, both specificities probably resulting from a very limited increase in the temperature on the aluminum surface during anodizing. Full article
(This article belongs to the Special Issue Fabrication and Applications of Nanostructured Anodic Oxides)
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Review

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58 pages, 16955 KiB  
Review
Overview of Engineering Carbon Nanomaterials Such As Carbon Nanotubes (CNTs), Carbon Nanofibers (CNFs), Graphene and Nanodiamonds and Other Carbon Allotropes inside Porous Anodic Alumina (PAA) Templates
by Leandro Nicolás Sacco and Sten Vollebregt
Nanomaterials 2023, 13(2), 260; https://doi.org/10.3390/nano13020260 - 7 Jan 2023
Cited by 9 | Viewed by 3628
Abstract
The fabrication and design of carbon-based hierarchical structures with tailored nano-architectures have attracted the enormous attention of the materials science community due to their exceptional chemical and physical properties. The collective control of nano-objects, in terms of their dimensionality, orientation and size, is [...] Read more.
The fabrication and design of carbon-based hierarchical structures with tailored nano-architectures have attracted the enormous attention of the materials science community due to their exceptional chemical and physical properties. The collective control of nano-objects, in terms of their dimensionality, orientation and size, is of paramount importance to expand the implementation of carbon nanomaterials across a large variety of applications. In this context, porous anodic alumina (PAA) has become an attractive template where the pore morphologies can be straightforwardly modulated. The synthesis of diverse carbon nanomaterials can be performed using PAA templates, such as carbon nanotubes (CNTs), carbon nanofibers (CNFs), and nanodiamonds, or can act as support for other carbon allotropes such as graphene and other carbon nanoforms. However, the successful growth of carbon nanomaterials within ordered PAA templates typically requires a series of stages involving the template fabrication, nanostructure growth and finally an etching or electrode metallization steps, which all encounter different challenges towards a nanodevice fabrication. The present review article describes the advantages and challenges associated with the fabrication of carbon materials in PAA based materials and aims to give a renewed momentum to this topic within the materials science community by providing an exhaustive overview of the current synthesis approaches and the most relevant applications based on PAA/Carbon nanostructures materials. Finally, the perspective and opportunities in the field are presented. Full article
(This article belongs to the Special Issue Fabrication and Applications of Nanostructured Anodic Oxides)
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67 pages, 17222 KiB  
Review
Conceptual Progress for Explaining and Predicting Self-Organization on Anodized Aluminum Surfaces
by Mikhail Pashchanka
Nanomaterials 2021, 11(9), 2271; https://doi.org/10.3390/nano11092271 - 31 Aug 2021
Cited by 26 | Viewed by 6297
Abstract
Over the past few years, researchers have made numerous breakthroughs in the field of aluminum anodizing and faced the problem of the lack of adequate theoretical models for the interpretation of some new experimental findings. For instance, spontaneously formed anodic alumina nanofibers and [...] Read more.
Over the past few years, researchers have made numerous breakthroughs in the field of aluminum anodizing and faced the problem of the lack of adequate theoretical models for the interpretation of some new experimental findings. For instance, spontaneously formed anodic alumina nanofibers and petal-like patterns, flower-like structures observed under AC anodizing conditions, and hierarchical pores whose diameters range from several nanometers to sub-millimeters could be explained neither by the classical field-assisted dissolution theory nor by the plastic flow model. In addition, difficulties arose in explaining the basic indicators of porous film growth, such as the nonlinear current–voltage characteristics of electrochemical cells or the evolution of hexagonal pore patterns at the early stages of anodizing experiments. Such a conceptual crisis resulted in new multidisciplinary investigations and the development of novel theoretical models, whose evolution is discussed at length in this review work. The particular focus of this paper is on the recently developed electroconvection-based theories that allowed making truly remarkable advances in understanding the porous anodic alumina formation process in the last 15 years. Some explanation of the synergy between electrode reactions and transport processes leading to self-organization is provided. Finally, future prospects for the synthesis of novel anodic architectures are discussed. Full article
(This article belongs to the Special Issue Fabrication and Applications of Nanostructured Anodic Oxides)
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