Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol
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Authors
Ćosović, AleksandarZak, Tomas
Glišić, Sandra B.
Sokić, Miroslav
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Lazarević, Slavica
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Ćosović, Vladan
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Orlović, Aleksandar M.
Article (Published version)
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Nano-crystalline nickel ferrite has a broad range of applications due to its favourable magnetic properties. Those characteristics can be significantly influenced by the synthesis pathway including methods conducted in the presence of supercritical alcohols. Nano-crystalline NiFe2O4 powders were obtained in the reaction under subcritical and supercritical conditions of ethanol. Both high pressure synthesis routes resulted in powders with smaller primary particles and higher mesoporosity than co-precipitation method. Upon the annealing treatment the average crystallite size increased while material structure remained uniform, resulting in significantly enhanced magnetic properties, such as coercivity and remanence. It was found that synthesis under supercritical conditions provides higher conversion but also material with larger average crystallite size upon annealing. The time and temperature of annealing stage significantly influenced the morphology and magnetic properties of the obta...ined powders.
Keywords:
Supercritical / Subcritical / Nickel ferrite / Nano-crystalline powders / Metal oxide / Magnetic propertiesSource:
Journal of Supercritical Fluids, 2016, 113, 96-105Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- Developing technological processes for nonstandard copper concentrates processing with the aim to decrease pollutants emission (RS-MESTD-Technological Development (TD or TR)-34023)
- European Regional Development Fund through CEITEC-Central European Institute of Technology [CZ.1.05/1.1.00/02.0068]
DOI: 10.1016/j.supflu.2016.03.014
ISSN: 0896-8446
WoS: 000375500000014
Scopus: 2-s2.0-84961926591
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Ćosović, Aleksandar AU - Zak, Tomas AU - Glišić, Sandra B. AU - Sokić, Miroslav AU - Lazarević, Slavica AU - Ćosović, Vladan AU - Orlović, Aleksandar M. PY - 2016 UR - https://ritnms.itnms.ac.rs/handle/123456789/389 AB - Nano-crystalline nickel ferrite has a broad range of applications due to its favourable magnetic properties. Those characteristics can be significantly influenced by the synthesis pathway including methods conducted in the presence of supercritical alcohols. Nano-crystalline NiFe2O4 powders were obtained in the reaction under subcritical and supercritical conditions of ethanol. Both high pressure synthesis routes resulted in powders with smaller primary particles and higher mesoporosity than co-precipitation method. Upon the annealing treatment the average crystallite size increased while material structure remained uniform, resulting in significantly enhanced magnetic properties, such as coercivity and remanence. It was found that synthesis under supercritical conditions provides higher conversion but also material with larger average crystallite size upon annealing. The time and temperature of annealing stage significantly influenced the morphology and magnetic properties of the obtained powders. PB - Elsevier Science Bv, Amsterdam T2 - Journal of Supercritical Fluids T1 - Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol EP - 105 SP - 96 VL - 113 DO - 10.1016/j.supflu.2016.03.014 UR - conv_759 ER -
@article{ author = "Ćosović, Aleksandar and Zak, Tomas and Glišić, Sandra B. and Sokić, Miroslav and Lazarević, Slavica and Ćosović, Vladan and Orlović, Aleksandar M.", year = "2016", abstract = "Nano-crystalline nickel ferrite has a broad range of applications due to its favourable magnetic properties. Those characteristics can be significantly influenced by the synthesis pathway including methods conducted in the presence of supercritical alcohols. Nano-crystalline NiFe2O4 powders were obtained in the reaction under subcritical and supercritical conditions of ethanol. Both high pressure synthesis routes resulted in powders with smaller primary particles and higher mesoporosity than co-precipitation method. Upon the annealing treatment the average crystallite size increased while material structure remained uniform, resulting in significantly enhanced magnetic properties, such as coercivity and remanence. It was found that synthesis under supercritical conditions provides higher conversion but also material with larger average crystallite size upon annealing. The time and temperature of annealing stage significantly influenced the morphology and magnetic properties of the obtained powders.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Journal of Supercritical Fluids", title = "Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol", pages = "105-96", volume = "113", doi = "10.1016/j.supflu.2016.03.014", url = "conv_759" }
Ćosović, A., Zak, T., Glišić, S. B., Sokić, M., Lazarević, S., Ćosović, V.,& Orlović, A. M.. (2016). Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol. in Journal of Supercritical Fluids Elsevier Science Bv, Amsterdam., 113, 96-105. https://doi.org/10.1016/j.supflu.2016.03.014 conv_759
Ćosović A, Zak T, Glišić SB, Sokić M, Lazarević S, Ćosović V, Orlović AM. Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol. in Journal of Supercritical Fluids. 2016;113:96-105. doi:10.1016/j.supflu.2016.03.014 conv_759 .
Ćosović, Aleksandar, Zak, Tomas, Glišić, Sandra B., Sokić, Miroslav, Lazarević, Slavica, Ćosović, Vladan, Orlović, Aleksandar M., "Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol" in Journal of Supercritical Fluids, 113 (2016):96-105, https://doi.org/10.1016/j.supflu.2016.03.014 ., conv_759 .