Issues

/

2021

/

vol. 19 /

Issue 2

Download the full version of the article (in PDF format)

L. A. Frolova, T. Ye. Butyrina
«Investigation of the Process of Coprecipitation of Double Fe–Co Hydroxides»
0263–0272 (2021)

PACS numbers: 65.40.gk, 75.50.Gg, 81.10.Dn, 81.15.Lm, 81.20.Fw, 82.45.Yz, 82.80.Fk

Cobalt ferrites, which have a spinel cubic structure, have been widely studied for many years. This is primarily due to the extremely wide range of their use, covering such areas of application as high-density magnetic recording, medicine (computed tomography, contrast agents of magnetic resonance imaging, targeted introduction of drugs and hyperthermia), electronic, telecommunication and space equipment, environmental technologies, gas sensors, supercapacitors, etc. The use of liquid-phase technologies for producing cobalt ferrites allows us to change the structure, composition and, as a result, the functional properties of a final product. The hydrophase method is widespread, including the step of coprecipitation of trivalent and divalent hydroxides with further heat treatment at high temperatures. Technologies that are more promising based on the co-deposition of the iron(II) and cobalt(II) hydroxides. However, this process has not been sufficiently studied. In this work, using the thermodynamic calculations and cyclic voltammetry (CVA), we study the Fe\(^{2+}\)-SO\(_4\)\(^{2-}\)-H\(_2\)O, Со\(^{2+}\)-SO\(_4\)\(^{2-}\)-H\(_2\)O, Fe\(^{2+}\)-Со\(^{2+}\)-SO\(_4\)\(^{2-}\)-H\(_2\)O systems. Successive stages of the formation of hydroxocomplexes are established. Thermodynamic calculations show that the pH values for the deposition of hydroxides have similar values. The CVA data were obtained with a molar ratio n=[OH\(^-\)]/[M2\(^{2+}\)]=1 in the Со\(^{2+}\)-Fe\(^{2+}\)-SO\(_4\)\(^{2-}\)-H\(_2\)O system. The course of the cathode sections of the curves changes sequentially for cycles 1–5 that indicates the degradation of the formed intermediate compounds.

Keywords: hydroxide, cobalt ferrite, hydroxocomplex, voltammetry, coprecipitation

https://doi.org/10.15407/nnn.19.02.263

References

1. V. S. Kumbhar et al., Applied Surface Science, 259: 39 (2012); https://www.semanticscholar.org/paper/Chemical-synthesis-of-spinel-cobalt-ferrite-for-Kumbhar-Jagadale/e832ad35ce28ca0609e03354093ff904db9227a6
2. F. R. Mariosi et al., Ceramics International, 46, No. 3: 2772 (2020); https://www.x-mol.com/paper/5871517
3. K. L. Routray, S. Saha, and D. Behera, Materials Science and Engineering: B, 257: 114548 (2020); https://www.sciencedirect.com/science/article/abs/pii/S0921510720300556?via%3Dihub
4. T. R. R. Naik et al., J. of Materials NanoScience, 6, No. 2: 67 (2019); http://www.pubs.iscience.in/journal/index.php/jmns/article/view/856
5. N. Heydari, M. Kheirmand, and H. Heli, Int. J. of Green Energy, 16, No. 6:
476 (2019); https://doi.org/10.1080/15435075.2019.1580198
6. S. Pansambal et al., J. of Water and Environmental Nanotechnology, 4, No.
3: 174 (2019); http://www.jwent.net/article_36844.html
7. B. C. Keswani et al., J. of Applied Physics, 126, No. 17: 174503 (2019); https://doi.org/10.1063/1.5114815
8. F. Sharifianjazi et al., Ceramics International, 46, No. 11: 18391 (2020); https://doi.org/10.1016/j.ceramint.2020.04.202
9. L. E. Caldeira et al., Ceramics International, 46, No. 2: 2465 (2020); https://doi.org/10.1016/j.ceramint.2019.09.240
10. A. M. Wahba and M. B. Mohamed, J. of Magnetism and Magnetic Materials, 378: 246 (2015); https://doi.org/10.1016/j.jmmm.2014.10.164
11. J. Revathi et al., Physica B: Condensed Matter, 587: 412136 (2020); https://doi.org/10.1016/j.physb.2020.412136
12. L. Frolova, A. Pivovarov, and T. Butyrina, Pigment and Resin Technology,
46, No. 5: 356 (2017); https://doi.org/10.1108/PRT-07-2016-0073
13. S. V. Saikova et al., Russ. J. of Inorg. Chem., 65: 291 (2020); https://doi.org/10.1134/S0036023620030110
14. L. Frolova, A. Pivovarov, and E. Tsepich, Nanophysics, Nanophotonics, Surface Studies, and Applications (Cham: Springer: 2016), p. 213; https://www.springer.com/gp/book/9783319307367#
15. L. Frolova, A. Pivovarov, and E. Tsepich, J. Chem. Technol. Metallurgy, 51, No. 2: 163 (2016); https://dl.uctm.edu/journal/node/j2016-2/5-Florova-163-167.pdf
16. L. Frolova, Pigment & Resin Technology, 48, No. 6: 487 (2019); https://doi.org/10.1108/PRT-12-2018-0126
17. F. Sharifianjazi et al., Ceramics International, 46, No. 11: 18391 (2020); https://doi.org/10.1016/j.ceramint.2020.04.202
18. H. Tahara, S. Tajima, and T. Tani, J. of the Ceramic Society of Japan, 110, No. 1288: 1048 (2002).
19. T. N. Ramesh, M. Rajamathi, and P. V. Kamath, Solid State Sciences, 5, No. 5: 751 (2003); https://doi.org/10.1016/S1293-2558(03)00086-4
20. J. Liu et al., Particuology, 10, No. 1: 24 (2012).
21. F. L. Theiss, G. A. Ayoko, and R. L. Frost, Applied Surface Science, 383:
200 (2016); https://doi.org/10.1016/j.apsusc.2016.04.150
22. B. Gregoire, C. Ruby, and C. Carteret, Dalton Transactions, 42, No. 44:
15687 (2013); https://doi: 10.1039/c3dt51521d
23. K. Y. Ma et al., Electrochimica Acta, 198: 231 (2016); https://doi.org/10.1016/j.electacta.2016.03.082
24. X. Li et al., J. of Materials Chem. A, 5, No. 30: 15460 (2017); https://pubs.rsc.org/en/content/articlelanding/2017/ta/c7ta04001f#!divAbs tract
25. V. A. Nazarenko, V. P. Antonovich, and E. M. Nevskaya, Gidroliz Ionov Metallov v Razbavlennykh Rastvorakh (Moscow: Atomizdat: 1979) (in Russian); В. А. Назаренко, В. П. Антонович, Е. I. Невская, Гидролиз ионов металлов в разбавленных растворах (Iосква: 1979).
26. S. Yu. Chundak and I. Ye. Barchiy, Osnovy Khimii Kompleksnykh Spoluk: Navchal’nyy Posibnyk (Uzhhorod: Vyd-vo UzhNU ‘Goverla’: 2019) (in Ukrainian); С. Ю. Чундак, І. Є. Барчій, Основи хімії комплексних сполук: навчальний посібник (Oжгород: Вид-во OжНO «Aоверла»: 2019).

This article is licensed under the Creative Commons Attribution-NoDerivatives 4.0 International License
©2003—2021 NANOSISTEMI, NANOMATERIALI, NANOTEHNOLOGII G. V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine.
E-mail: tatar@imp.kiev.ua Phones and address of the editorial office About the collection User agreement