Incorporation of Ions into Nanostructured Anodic Oxides-Mechanism and Functionalities
Anna M Brudzisz1, Damian Giziński1, Wojciech J Stępniowski1
1Institute of Materials Science and Engineering, Faculty of Advanced Technology and Chemistry, Military University of Technology, 2 Kaliskiego Str, 00908 Warsaw, Poland.
Molecules (Basel, Switzerland)
|November 13, 2021
Summary
Anion incorporation during metal anodizing is crucial for forming nanoporous oxide layers. This review details how incorporated anions influence oxide properties like photoluminescence and refractive index, impacting applications.
Area of Science:
- Materials Science
- Electrochemistry
- Surface Science
Background:
- Anodic oxidation of metals forms ordered nanoporous or nanotubular oxide layers with diverse applications.
- Fundamental understanding of anodizing, particularly anion incorporation, requires deeper investigation.
Purpose of the Study:
- To review the phenomenon of anion incorporation during metal anodization.
- To elaborate on the influence of incorporated anions on anodic alumina properties.
- To analyze the impact of anion incorporation on photoluminescence, galvanoluminescence, refractive index, and chemical properties.
Main Methods:
- Literature review and analysis of existing research on anion incorporation in anodic oxides.
- Examination of the effects of various electrolyte anions on anodic alumina characteristics.
- Investigation into the role of specific anions like fluoride and ruthenites in nanostructure formation.
Main Results:
- Anion incorporation is an inevitable aspect of metal anodization.
- Incorporated anions significantly impact the photoluminescence, galvanoluminescence, refractive index, and chemical properties of anodic alumina.
- Fluoride anions are critical for nanostructured morphology in d-electronic metal anodizing.
- Incorporated anionic species can be beneficial, as seen with ruthenites in titania formation.
Conclusions:
- Understanding anion incorporation is key to controlling and optimizing anodic oxide properties.
- The type and concentration of incorporated anions can be tailored to achieve desired material characteristics.
- Anion incorporation offers a pathway to enhance the functionality of anodic oxides for advanced applications.
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