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Influence of the preparation method on the structure, phase formation and magnetic properties of templated CUFE2O4 spinel
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics. Iran University of Science and Technology, Iran.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.ORCID iD: 0000-0001-5678-5298
2014 (English)In: Iranian Journal of Materials Science and Engineering, ISSN 1735-0808, Vol. 11, no 3, 1-10 p.Article in journal (Refereed) PublishedText
Abstract [en]

The synthesis of mesoporous CuFe2O4 spinel by several nanocasting strategies (i.e., multi-step nanocasting, one step nanocasting, modified solid-liquid), in which copper and iron nitrates are used as precursors and Pluronic P123 as surfactant, is explored. We have also checked the effect of pH, citric acid and sodium citrate in multi-step nanocasting method. The modified solid-liquid method which contains impregnating mesoporous silica by molten state salts in a non-ionic solvent seems to be the best choice to obtain single phase ordered mesoporous copper ferrite. Other methods suffer from the presence of copper oxide or hematite as impurities or lack of integrity in the mesoporous structure. Increasing pH up to 9.5 does not enhance the phase formation inside the pores of the silica matrix. The citric acid yields a fine structure but does not facilitate the phase formation. Adding sodium citrate neither heals the phase formation nor the structure of the final product. Moreover, vinyl- functionalized mesoporous silica exploited in this study as a hard template entraps both metal nitrates in the pores, assisting impregnation procedure.

Place, publisher, year, edition, pages
Iran University of Science and Technology , 2014. Vol. 11, no 3, 1-10 p.
Keyword [en]
Mesoporous materials, Nanocasting, Synthesis, Vinyl-functionalized hard template
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-181263ScopusID: 2-s2.0-84949811736OAI: oai:DiVA.org:kth-181263DiVA: diva2:902540
Note

QC 20160211

Available from: 2016-02-11 Created: 2016-01-29 Last updated: 2016-02-11Bibliographically approved

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Najmoddin, NajmehToprak, Muhammet S.
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