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Article

High-Power Ultrasonic Synthesis and Magnetic-Field-Assisted Arrangement of Nanosized Crystallites of Cobalt-Containing Layered Double Hydroxides

1
Department of Materials and Ceramics Engineering, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
2
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Ave., 61103 Kharkov, Ukraine
3
O. Galkin Donetsk Institute for Physics and Engineering of the National Academy of Sciences of Ukraine, 46 Nauky Ave., 03680 Kyiv, Ukraine
4
Institute of Technical Acoustics of National Academy of Sciences of Belarus, Lyudnikov Avenue, 13, 210009 Vitebsk, Belarus
*
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(3), 62; https://doi.org/10.3390/chemengineering3030062
Received: 11 May 2019 / Revised: 27 June 2019 / Accepted: 3 July 2019 / Published: 4 July 2019
(This article belongs to the Special Issue Advanced Applications of Layered Double Hydroxides)
High-quality stoichiometric Co2Al–NO3 and Co2Al–CO3 layered double hydroxides (LDHs) have been obtained by precipitation followed by anion exchange, both high-power-sonication assisted. Application of high-power ultrasound has been demonstrated to result in a considerable acceleration of the crystallization process and the anion-exchange reaction. Two independent approaches were used to form bulk and 2-D samples of Co2Al–NO3 with the oriented crystallites, namely uniaxial pressing of deposits from sonicated LDH slurries and magnetic field-assisted arrangement of LDH crystallites precipitating on glass substrates. A convenient way of preparation of semi-transparent compacts with relatively big blocks of oriented crystallites have been demonstrated. Thin dense transparent films of highly-ordered crystallites of Co2Al–NO3 LDH have been produced and characterized. View Full-Text
Keywords: magnetic layered structure; oxygen octahedron; anisotropic crystallite; highly-ordered arrangement magnetic layered structure; oxygen octahedron; anisotropic crystallite; highly-ordered arrangement
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MDPI and ACS Style

Salak, A.N.; Vieira, D.E.L.; Lukienko, I.M.; Shapovalov, Y.O.; Fedorchenko, A.V.; Fertman, E.L.; Pashkevich, Y.G.; Babkin, R.Y.; Shilin, A.D.; Rubanik, V.V.; Ferreira, M.G.S.; Vieira, J.M. High-Power Ultrasonic Synthesis and Magnetic-Field-Assisted Arrangement of Nanosized Crystallites of Cobalt-Containing Layered Double Hydroxides. ChemEngineering 2019, 3, 62. https://doi.org/10.3390/chemengineering3030062

AMA Style

Salak AN, Vieira DEL, Lukienko IM, Shapovalov YO, Fedorchenko AV, Fertman EL, Pashkevich YG, Babkin RY, Shilin AD, Rubanik VV, Ferreira MGS, Vieira JM. High-Power Ultrasonic Synthesis and Magnetic-Field-Assisted Arrangement of Nanosized Crystallites of Cobalt-Containing Layered Double Hydroxides. ChemEngineering. 2019; 3(3):62. https://doi.org/10.3390/chemengineering3030062

Chicago/Turabian Style

Salak, Andrei N., Daniel E. L. Vieira, Irina M. Lukienko, Yuriy O. Shapovalov, Alexey V. Fedorchenko, Elena L. Fertman, Yurii G. Pashkevich, Roman Yu. Babkin, Aleksandr D. Shilin, Vasili V. Rubanik, Mário G. S. Ferreira, and Joaquim M. Vieira. 2019. "High-Power Ultrasonic Synthesis and Magnetic-Field-Assisted Arrangement of Nanosized Crystallites of Cobalt-Containing Layered Double Hydroxides" ChemEngineering 3, no. 3: 62. https://doi.org/10.3390/chemengineering3030062

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