Nanostructural characterization of large-scale porous alumina fabricated via anodizing in arsenic acid solution

Akiya, Shunta; Kikuchi, Tatsuya; Natsui, Shungo

doi:10.1016/j.apsusc.2017.01.243

Cited by 27 publications

(15 citation statements)

References 56 publications

(66 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The oxalic-NAA is also one of the most prominent examples with regards to the photoluminescence performance, exceeding that of the sulfuric-and the phosphoric-NAA and can be adjusted with fabrication conditions [76,77]. Another example of a photoluminescenceactive structure can be the arsenic-NAA [78]. This recent approach is characterized with a structure featuring much thicker skeleton of pure alumina as compared to other typical electrolytes.…”

Section: Electrolyte Specific Naa Geometrymentioning

confidence: 99%

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

2021

View full text Add to dashboard Cite

The development of aluminum anodization technology features many stages. With the story stretching for almost a century, rather straightforward—from current perspective—technology, raised into an iconic nanofabrication technique. The intrinsic properties of alumina porous structures constitute the vast utility in distinct fields. Nanoporous anodic alumina can be a starting point for: Templates, photonic structures, membranes, drug delivery platforms or nanoparticles, and more. Current state of the art would not be possible without decades of consecutive findings, during which, step by step, the technique was more understood. This review aims at providing an update regarding recent discoveries—improvements in the fabrication technology, a deeper understanding of the process, and a practical application of the material—providing a narrative supported with a proper background.

show abstract

Section: Electrolyte Specific Naa Geometrymentioning

confidence: 99%

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

2021

View full text Add to dashboard Cite

show abstract

“…The duplex structure has been reported for other electrolytes, e.g., malonic acid [91,92], sodium hydrogen sulfate solution at various concentrations [93], phosphonic acid (H 3 PO 3 ) at 150 V [94] as well as in 0.3 M arsenic acid (H 3 AsO 4 ) at 320 V [95]. Takenaga et al [96] studied anion incorporation in AAO formed during anodizing in 1.0 M etidronic acid at 215 V and 25 • C for 1 or 2 h. This molecule has two phosphorous atoms and two carbon atoms in the molecular structure; however, the distribution of P and C atoms in AAO originating from the anions was clearly different.…”

Section: Mechanism Of Anions Incorporation: Duplex and Triplex Structurementioning

confidence: 76%

“…The AAO prepared by anodization in 0.3 M arsenic acid (at 0 • C, 320 V for 72 h) exhibited no photoluminescence emission under UV irradiation at 365 nm and a white hue under UV irradiation at 254 nm [95]. Under the latter irradiation, an intense photoluminescence emission band with a center wavelength of approximately 515 nm was measured on the porous alumina.…”

Section: Photoluminescence and Galvanoluminescencementioning

confidence: 97%

Incorporation of Ions into Nanostructured Anodic Oxides—Mechanism and Functionalities

2021

View full text Add to dashboard Cite

Anodic oxidation of metals leads to the formation of ordered nanoporous or nanotubular oxide layers that contribute to numerous existing and emerging applications. However, there are still numerous fundamental aspects of anodizing that have to be well understood and require deeper understanding. Anodization of metals is accompanied by the inevitable phenomenon of anion incorporation, which is discussed in detail in this review. Additionally, the influence of anion incorporation into anodic alumina and its impact on various properties is elaborated. The literature reports on the impact of the incorporated electrolyte anions on photoluminescence, galvanoluminescence and refractive index of anodic alumina are analyzed. Additionally, the influence of the type and amount of the incorporated anions on the chemical properties of anodic alumina, based on the literature data, was also shown to be important. The role of fluoride anions in d-electronic metal anodizing is shown to be important in the formation of nanostructured morphology. Additionally, the impact of incorporated anionic species, such as ruthenites, and their influence on anodic oxides formation, such as titania, reveals how the phenomenon of anion incorporation can be beneficial.

show abstract

“…Because the nanostructure and chemical, physical, and optical properties of the porous alumina strongly depend on the electrolyte species used [19][20][21], additional acidic electrolytes have been investigated by many research groups with respect to the formation of novel porous alumina. Inorganic acids [22][23][24][25][26][27][28], organic carboxylic acids [29][30][31][32][33][34][35], organophosphorus acids [36][37][38][39][40][41], and cyclic oxocarbon acids [42,43] have been studied so far.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of anodic porous alumina via galvanostatic anodizing in alkaline sodium tetraborate solution and their morphology

Kikuchi

Kunimoto

Ikeda

et al. 2019

Journal of Electroanalytical Chemistry

Self Cite

View full text Add to dashboard Cite

The anodizing of aluminum in an alkaline sodium tetraborate (Na2B4O7) solution was investigated with respect to the nanostructural characterization of anodic porous alumina. Electropolished aluminum specimens were galvanostatically anodized under various conditions in 0.1-0.5 M sodium tetraborate solutions at 293-353 K and a current density of 2.5-400 Am -2 . Anodic oxide with numerous flower-like defects was formed by anodizing in a 0.1 M Na2B4O7 solution due to the film breakdown with continuous visible sparking. On the other hand, a uniform porous alumina film without any breakdown was successfully obtained by anodizing a more concentrated solution than 0.3 M at 333 K. The anodic oxide was almost pure alumina and consisted of a thin outer layer with numerous small pits and a thick inner layer with typical porous alumina cells. The pore walls possessed continuous bumpy surfaces measuring 10-20 nm in roughness. As the temperature further increased to 353 K, the regularity of the porous alumina improved due to the high current density of more than 150 Am -2 during anodizing. Slippery superhydrophobic and sticky superoleophobic aluminum surfaces could be easily fabricated via high temperature anodizing and subsequent self-assembled monolayer modification.

show abstract

Nanostructural characterization of large-scale porous alumina fabricated via anodizing in arsenic acid solution

Cited by 27 publications

References 56 publications

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

Incorporation of Ions into Nanostructured Anodic Oxides—Mechanism and Functionalities

Fabrication of anodic porous alumina via galvanostatic anodizing in alkaline sodium tetraborate solution and their morphology

Contact Info

Product

Resources

About