NANOPERFORATION TECHNOLOGY AND FUNCTIONAL PROPERTIES OF COPPER STRUCTURED MATERIALS IN THE PROCESS OF GLUCOSE ANODIC OXIDATION

, , , ,
 60-69 p.
The paper presents an original technology for the synthesis of nanostructured copper electrodes by the method of replicas from metallic aluminum nanomatrices on a pilot high-voltage galvanic installation. The technological scheme used makes it possible to carry out the process of continuous high-voltage microplasma perforation of a metal tape with the formation of nanopores of a given size in the range from 20 to 500 nm at a variable voltage. To study the received replicas, a series of indicator electrodes with a working surface made of replica material was created. Cold rolled copper foil was used as a reference material for the electrode. The visible area of the working surface of the manufactured electrodes was examined using a scanning electron microscope. By the method of cyclic voltammetry, the coefficient of increase in the specific surface area was determined by increasing the peak area corresponding to the reduction of the surface film of copper oxide formed on the surface of the copper electrode in an alkaline medium at positive potentials. For a smooth copper electrode, the surface area was 0.071 mm2. For a nanostructured electrode of the same size, the total surface area was calculated with respect to the ar-eas of current peaks corresponding to the reduction of the surface film of copper (II) oxide on the surface of a mas-sive copper electrode and a nano-porous copper electrode. It was found that the catalytic activity, estimated by the magnitude of the current associated with the oxidation of the model substrate – glucose, is approximately 10 times higher than the increase in activity due to the total surface of copper. The anomalous catalytic effect is discussed from the point of view of increasing the local electric field strength due to the high curvature of the surface of nan-ofibers and from the point of view of changing the conditions of diffusion of the substrate to the electrode surface due to nanostructuring.
Keywords:
pilot plant, synthesis technology, copper replicas, glucose oxidation, functional activity
Antropov A.P.
Candidate of Engineering Sciences (Ph.D.), Associate Professor, MIREA – Russian Technological University
Ryabkov E.D.
Master of Arts (M.A.), Moscow Technological University
Lebedeva M.V.
Candidate of Chemical Sciences (Ph.D.), Associate Professor, MIREA – Russian Technological University
Zaytsev N.K.
Doctor of Chemical Sciences (Advanced Doctor), Associate Professor, Moscow Technological University
Yashtulov N.A.
Doctor of Chemical Sciences (Advanced Doctor), Professor, Moscow Technological University
1. Li J., Wei H., Zhao K., Wang M., Chen D., Chen M. Effect of anodizing temperature and organic acid addi-tion on the structure and corrosion resistance of anodic aluminum oxide films. Thin Solid Films. 2020. V. 713. P. 138359.
2. Antropov A.P., Zajcev N.K., Ryabkov E.D., Slepchenko G.B., YAshtulov N.A. Ustanovka dlya proiz-vodstva nanovorsistyh (ul'tradispersnyh) kataliticheski aktivnyh materialov. Vestnik tekhnolo-gicheskogo universiteta. 2021. T. 24. № 4. S.85 – 88.
3. Noormohammadi M., Arani Z.S., Ramazani A., Kashi M.A. Super-fast fabrication of self-ordered na-noporous anodic alumina membranes by ultra-hard anodization. Electrochimica Acta. 2020. V. 354. R. 136766.
4. Roslyakov I.V., Kolesnik I.V., Levina E.E., Katorova N.S., Pestrikov P.P., Kardash T.Yu., Solovyov L.A., Napolskii K.S. Annealing induced structural and phase transitions in anodic aluminum oxide prepared in oxalic acid electrolyte. Surface and Coatings Technology. 2020. V. 381. P. 125159.
5. Chumnanwat S., Watanabe Y., Taniguchi N., Higashi H., Kodama A., Seto T., Otani Y., Kumita M. Pore structure control of anodized alumina film and sorption properties of water vapor on CaCl2-aluminum composites. Energy. 2020. V. 208. R. 118370.
6. Aslam S., Das A., Khanna M., Kuanr B. Concentration gradient Co-Fe nanowire arrays: Microstructure to magnetic characterizations. Journal of Alloys and Compounds. 2020. V. 838. P. 155566.
7. Kawai S., Ueda R. Magnetic Properties of Anodic Oxide Coatings on Aluminum Containing Electrode-posited Co and Co‐Ni. J. Electrochem. Soc. 1975. V. 122. № 1. R. 32 – 36.
8. Shiraki M., Wakui Y., Tokushima T., Tsuya N. Perpendicular magnetic media by anodic oxidation method and their recording characteristics. IEEE Trans. Magn. 1985. V. 21. № 5. P. 1465 – 1467.
9. Saito M., Kirihara M., Taniguchi T., Miyagi M. Micropolarizer made of the anodized alumina film. Appl. Phys. Lett. 1989. V. 55. №7. R. 607 – 609.
10. Miller C.J., Majda M. Microporous aluminum oxide films at electrodes. J. Am. Chem. Soc. 1985. V. 107. № 5. R. 1419 – 1420.
11. Tierney M.J., Martin C.R. New Electrorelease Systems Based on Microporous Membranes. J. Electrochem. Soc. 1990. V. 137. № 12. R. 3789 – 3792.
12. Yoshino T., Baba N. Electrochromism of Oxalatotungstate(V) Complexes Chemically Deposited onto Mi-cropores of Anodic Oxide Films on Aluminum. Nippon Kagaku Kaishi. 1983. V. 1983. № 6. R. 955 – 957.
13. Mizuki I., Yamamoto Y., Yoshino T., Baba N. Electrochemical Incorporation of Electroluminescent Mn Ac-tivator into Porous Anodic Al2O3 Films on Al. J. Met. Surf. Finish. Soc. Japan. 1987. V. 38. № 12. R. 561 – 563.
14. Antropov A.P., Zajcev N.K., Ryabkov E.D., YAshtulov N.A., Mudrakova P.N. Himiko-tekhnologicheskij podhod k sozdaniyu nanovorsistyh (ul'tradispersnyh) kataliticheski aktivnyh materialov. Tonkie himicheskie tekhnologii. 2021. T. 16. № 2. S. 105 – 112.
15. Abdullin I.F., Budnikov G.K., Bakanina Yu.N., Kukushkina N.N. Mednyj i serebryanyj elektrody dlya po-tenciometricheskogo i vol'tamperometricheskogo opredeleniya glyukozy i drugih uglevodov. ZHurnal analitich-eskoj himii. 1998. T. 53. № 10. S. 1075 – 1080.
16. CHerkasov D.A., Zagorskij D.L., Hajbullin R.I., Muslimov A.E., Doludenko I.M. Struktura i magnitnye svojstva sloevyh nanoprovolok iz 3d-metallov, poluchennyh metodom matrichnogo sinteza. Fizika tverdogo tela. 2020. T. 62. № 9. S. 1531 – 1541.
17. Martynov L.Yu., Sitnikova T.V., Lazov M.A., Lovchinovskij I.Yu. Zajcev N.K. Ispol'zovanie aktivirovan-nogo mednogo mikroelektroda dlya vol'tamperometricheskogo opredeleniya spirtov. Tonkie himicheskie tekhnologii. 2018. T. 13. № 1. S. 22 – 32.
18. Budnikov G.K., Majstrenko V.N., Murinov Yu.I. Vol'tamperometriya s modificirovannymi i ul'tramikro-elektrodami. M.: Nauka, 1994, 294 s.