Synthesis of magnetic MnFe2O4/polyaniline composite microspheres and their electrocatalytic activity for oxygen reduction reaction

Lv, Meng, She, Xilin, Li, Qun, Sun, Juan, Li, Hongliang, Zhao, X. S. and Guo, Peizhi (2015) Synthesis of magnetic MnFe2O4/polyaniline composite microspheres and their electrocatalytic activity for oxygen reduction reaction. Science of Advanced Materials, 7 9: 1686-1693. doi:10.1166/sam.2015.2414


Author Lv, Meng
She, Xilin
Li, Qun
Sun, Juan
Li, Hongliang
Zhao, X. S.
Guo, Peizhi
Title Synthesis of magnetic MnFe2O4/polyaniline composite microspheres and their electrocatalytic activity for oxygen reduction reaction
Journal name Science of Advanced Materials   Check publisher's open access policy
ISSN 1947-2935
1947-2943
Publication date 2015-09-01
Sub-type Article (original research)
DOI 10.1166/sam.2015.2414
Open Access Status Not Open Access
Volume 7
Issue 9
Start page 1686
End page 1693
Total pages 8
Place of publication Valencia, CA, United States
Publisher American Scientific Publishers
Language eng
Formatted abstract
Manganese ferrite (MnFe2O4)/polyaniline (PANI) composite microspheres were synthesized controllably by the in situ chemical polymerization of aniline in the presence of MnFe2O4 colloidal nanocrystal clusters (CNCs). MnFe2O4/PANI composites were investigated by a series of techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and differential thermal gravity (DTG). It was found that the crystalline size of MnFe2O4 nanoparticles in the composites was larger than that of primary nanoparticles in original MnFe2O4 CNCs. The thermal stability of PANI in the composites increased with the decrease of the polymer contents. Magnetic measurements showed that magnetic properties of the composites were depended on the crystalline size and the assembly of primary MnFe2O4 nanoparticles as well as the composition ratio of PANI with ferrites. The electrocatalytic activity of MnFe2O4 /PANI composites and MnFe2O4 CNCs for oxygen reduction reaction was mainly relied on the crystalline size and assembly of primary nanoparticles in the samples. Based on the experimental results, the formation mechanisms of MnFe2O4/PANI composites as well as the relationship between their structures and properties have been discussed.
Keyword Manganese ferrite
Polyaniline
Composite
Magnetism
Electrocatalysis
Facile synthesis
Hollow spheres
Graphene oxide
Step synthesis
Polyaniline
Nanocomposites
Nanoparticles
Ferrite
Hybrid
Co
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
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