Jump to main content
Jump to site search

Issue 4, 2014
Previous Article Next Article

Controlled synthesis of MnxFe1−xO concave nanocubes and highly branched cubic mesocrystals

Author affiliations

Abstract

In this work, we reported the synthesis of concave nanocubes of iron-manganese oxide (MnxFe1−xO) via a thermolysis process in a mixture of oleic acid (OA) and oleylamine (OAm). The shape and size of the iron-manganese oxide can be tuned by changing the experimental conditions such as the solvent composition (volume ratio of OA and OAm), heating rate, precursor concentration, thermolysis temperature and reaction time. The MnxFe1−xO nanocrystals with different morphologies such as nanospheres, nanocubes, concave nanocubes, and octapods were synthesized under appropriate reaction conditions. The favorable reaction conditions and growth mechanism for concave MnxFe1−xO cubes were investigated in detail. Moreover, monodisperse MnxFe1−xO nanocrystals with anisotropic shapes and compositions tunable in the entire range (0 ≤ x ≤ 1) were obtained by changing the Mn/Fe ratio in the precursor solutions. The morphology of the MnxFe1−xO nanocrystals varied from concave nanocubes, nanospindles, nanorods, T-shaped nanorods to nanoflowers with increasing Mn content x from 0 to 1. Furthermore, superparamagnetic, highly branched cubic MnxFe1−xO mesocrystals with sizes more than 100 nm were synthesized for the first time by using 1-octadecene as a co-solvent in the reaction solutions. It was proposed that the highly branched cubic mesocrystals were formed via self-aggregation of concave nanocubes, accompanied by Ostwald ripening and crystal fusion and growth.

Graphical abstract: Controlled synthesis of MnxFe1−xO concave nanocubes and highly branched cubic mesocrystals

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Aug 2013, accepted on 09 Oct 2013 and first published on 15 Oct 2013


Article type: Paper
DOI: 10.1039/C3CE41618F
Citation: CrystEngComm, 2014,16, 600-608
  •   Request permissions

    Controlled synthesis of MnxFe1−xO concave nanocubes and highly branched cubic mesocrystals

    Z. Li, Y. Ma and L. Qi, CrystEngComm, 2014, 16, 600
    DOI: 10.1039/C3CE41618F

Search articles by author

Spotlight

Advertisements