Pashchanka, Mikhail (2024)
Conceptual Progress for Explaining and Predicting Self-Organization on Anodized Aluminum Surfaces.
In: Nanomaterials, 2021, 11 (9)
doi: 10.26083/tuprints-00019624
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (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 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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Pashchanka, Mikhail |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Conceptual Progress for Explaining and Predicting Self-Organization on Anodized Aluminum Surfaces |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Januar 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nanomaterials |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 9 |
| Kollation: | 67 Seiten |
| DOI: | 10.26083/tuprints-00019624 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/19624 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (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 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. |
| Freie Schlagworte: | porous anodic alumina (PAA), chaos and self-organization theory, electroconvection, colloidal gel model, anion exchange, DLVO theory, fluid mechanics, surface chemistry, surface energy reduction, electrochemistry |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-196247 |
| Zusätzliche Informationen: | This article belongs to the Special Issue Fabrication and Applications of Nanostructured Anodic Oxides |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie |
| Hinterlegungsdatum: | 12 Jan 2024 14:11 |
| Letzte Änderung: | 15 Jan 2024 07:31 |
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| Suche nach Titel in: | TUfind oder in Google |
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