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Anodic formation of nanofibers of aluminum oxide during aluminum anodizing in oxalic acid

In present work, the processes of formation and anodic growth of nanofibers of aluminum oxide during aluminum anodizing were studied. Porous anodic alumina films with surface layer of nanofibers of anodic oxide were formed by anodizing of Al foil in a 0.3 M aqueous solution of oxalic acid at 100 V. Surface morphology of anodic films was analyzed by SEM. The analysis of SEM images of anodic films was performed by ImageJ software to determine the porous structure parameters. The results obtained showed that the diameter of the nanofibers is about 20 ± 2 nm. Anodic oxide possesses a two-layer structure: an upper layer, which consists of nanofibers, and a lower layer of anodic alumina with a nanoporous structure. It was found that anodic growth of nanofibers of aluminum oxide was initiated at the anodizing voltage of 100 V, at the points adjacent to three porous cells.

1. Sulka G.D., in Nanostructured materials in electrochemistry, Ed. Eftekhari A., (Wiley, Weinheim, 2008) pp. 1–116, ISBN 978-3-527-31876-6, https://dx.doi.org/10.1002/9783527621507 2. Lee W., Park S.-J., Chem. Rev. 114 (2014) 7487–7556, https://doi.org/10.1021/cr500002z
3. Kikuchi T., Nishinaga O., Natsui S., Suzuki R.O., Appl. Surf. Sci. 341 (2015) 19–27, https://doi.org/10.1016/j.apsusc.2015.03.007
4. Ono S., Masuko N., Surf. Coat. Technol. 169-170 (2003) 139–142, https://doi.org/10.1016/S0257-8972(03)00197-X
5. Vrublevsky I., Charniakova K., Videkov V., Tuchkovsky A., Nanosci.&Nanotech. – Nanostructured materials: application and transfer. 16 (2016) 42–43
6. Santos A., J. Mater. Chem. C5 (2017) 5581–5599, https://doi.org/10.1039/C6TC05555A
7. Chernykova K., Vrublevsky I., Videkov V., Tzaneva B., Nanosci.&Nanotech. – Nanostructured materials: application and transfer. 19 (2019) 33–36.
8. Baron-Wiecheć A., Burke M.G., Hashimoto T., Liu H., Skeldon P., Thompson G.E., Habazaki H., Ganem J.-J., Vickridge I.C., Electrochim. Acta. 113 (2013) 302–312, https://doi.org/10.1016/j.electacta.2013.09.060
9. Chernyakova K., Vrublevsky I., Klimas V., Jagminas A., J. Electrochem. Soc. 165 (2018) E289–E293, https://doi.org/10.1149/2.1001807jes
10. Abd-Elnaiem A.M., Mebed A.M., Gaber A., Abdel-Rahim M.A., Int. J. Electrochem. Sci. 8 (2013) 10515–10525, http://www.electrochemsci.org/papers/vol8/80810515.pdf
11. Vrublevsky I., Parkoun V., Sokol V., Schreckenbach J., Appl. Surf. Sci. 236 (2004) 270–277, https://doi.org/10.1016/j.apsusc.2004.04.030

Vrublevsky, I., Chernyakova, K., Tsaneva, B., Videkov, V., Anodic formation of nanofibers of aluminum oxide during aluminum anodizing in oxalic acid, Nanoscience & Nanotechnology, 20, N 1-2 (2022), pp. хх-хх, https://doi.org/10.xxxx/nsnt.2022.xxxx