High-Power Ultrasonic Synthesis and Magnetic-Field-Assisted Arrangement of Nanosized Crystallites of Cobalt-Containing Layered Double Hydroxides
| Autor: | Aleksandr D. Shilin, Irina M. Lukienko, V. Rubanik, Alexey V. Fedorchenko, Elena Fertman, Yuriy O. Shapovalov, Mário G.S. Ferreira, Roman Yu. Babkin, Joaquim M. Vieira, Yurii G. Pashkevich, Andrei N. Salak, Daniel E. L. Vieira |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering Sonication chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry oxygen octahedron 01 natural sciences law.invention lcsh:Chemistry law Anisotropic crystallite Crystallization magnetic layered structure anisotropic crystallite Ion exchange Precipitation (chemistry) General Engineering Layered double hydroxides 021001 nanoscience & nanotechnology 0104 chemical sciences Oxygen octahedron General Energy lcsh:QD1-999 Chemical engineering chemistry Magnetic layered structure Highly-ordered arrangement engineering Crystallite highly-ordered arrangement 0210 nano-technology Cobalt Stoichiometry |
| Zdroj: | ChemEngineering, Vol 3, Iss 3, p 62 (2019) ChemEngineering Volume 3 Issue 3 Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 2305-7084 |
| DOI: | 10.3390/chemengineering3030062 |
| Popis: | High-quality stoichiometric Co2Al&ndash NO3 and Co2Al&ndash 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&ndash 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&ndash NO3 LDH have been produced and characterized. |
| Databáze: | OpenAIRE |
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