Solvothermal synthesis of MnFe2O4 colloidal nanocrystal assemblies and their magnetic and electrocatalytic properties

Li, Zhen, Gao, Kai, Han, Guangting, Wang, Rongyue, Li, Hongliang, Zhao, X. S. and Guo, Peizhi (2015) Solvothermal synthesis of MnFe2O4 colloidal nanocrystal assemblies and their magnetic and electrocatalytic properties. New Journal of Chemistry, 39 1: 361-368. doi:10.1039/c4nj01466a


Author Li, Zhen
Gao, Kai
Han, Guangting
Wang, Rongyue
Li, Hongliang
Zhao, X. S.
Guo, Peizhi
Title Solvothermal synthesis of MnFe2O4 colloidal nanocrystal assemblies and their magnetic and electrocatalytic properties
Journal name New Journal of Chemistry   Check publisher's open access policy
ISSN 1144-0546
1369-9261
Publication date 2015-01-01
Year available 2015
Sub-type Article (original research)
DOI 10.1039/c4nj01466a
Open Access Status Not Open Access
Volume 39
Issue 1
Start page 361
End page 368
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2015
Language eng
Formatted abstract
Submicrometer MnFe2O4 colloidal nanocrystal assemblies (CNAs) have been synthesized controllably by using a solvothermal method through simply adjusting synthetic reagents. The size and microstructure of MnFe2O4 CNAs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results showed that MnFe2O4 CNAs were well-separated and uniform with the size scales ranging from 230 nm to 950 nm, which were composed of primary crystalline nanoparticles with the sizes ranging from 16 nm to 43 nm. Room-temperature magnetic measurement results showed that MnFe2O4 CNAs were weakly ferromagnetic with small remnant saturation and coercivity values. The magnetization saturation values of CNAs were increased with the increase of the size of primary nanoparticles. Electrochemical measurements showed that the size of primary nanoparticles of MnFe2O4 CNAs had an important effect on the electrochemical reduction of H2O2. However, the electrocatalytic activity of MnFe2O4 CNAs for oxygen reduction reaction closely correlated with both the crystal size and self-assembly of primary nanoparticles. Based on the experimental results, the formation mechanisms of MnFe2O4 CNAs as well as the relationship between their structures and properties have been analyzed and discussed.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 10 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 06 Jan 2015, 00:17:56 EST by System User on behalf of School of Chemical Engineering