Role of polymeric surfactants on the growth of manganese ferrite nanoparticles

Bastami, Tahereh Rohani, Entezari, Mohammad H., Hu, Qiu Hong, Hartono, Sandy Budi and Qiao, Shi Zhang (2012) Role of polymeric surfactants on the growth of manganese ferrite nanoparticles. Chemical Engineering Journal, 210 157-165. doi:10.1016/j.cej.2012.08.031

Author Bastami, Tahereh Rohani
Entezari, Mohammad H.
Hu, Qiu Hong
Hartono, Sandy Budi
Qiao, Shi Zhang
Title Role of polymeric surfactants on the growth of manganese ferrite nanoparticles
Journal name Chemical Engineering Journal   Check publisher's open access policy
ISSN 1385-8947
Publication date 2012-11
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.cej.2012.08.031
Volume 210
Start page 157
End page 165
Total pages 9
Place of publication Amsterdam, The Netherlands
Publisher Elseiver
Collection year 2013
Language eng
Formatted abstract
The growth kinetics of manganese ferrite (MnFe 2O 4) nanoparticles was studied by solvothermal reaction of iron and manganese salts in ethylene glycol as a solvent. To explore the mechanism of the nanoparticle formation and development, polyethylene glycol (PEG) with different molecular weights and polyvinyl pyrrolidone (PVP) were used as polymeric surfactants to investigate their effects on the formation of MnFe 2O 4 nanoparticles. The size evolution and the size distribution not only dependent on the kind of surfactant but also on the time and temperature of reaction process. In the presence of low molecular weight PEG (PEG 300), nanoparticles with diameter of 180nm and narrow size distribution could be produced at 160°C during 12h of reaction while the nanoparticles with average size of 330nm were formed by using PEG 300 at 200°C and 48h. Therefore, by increasing the temperature and the time of reaction, the size of nanoparticles was increased and finally reached a critical size and then collapsed. When a large molecular weight surfactant PEG 10000 was used, the nanoparticles with average size of 230nm were formed at 180°C and 60h. In the case of PEG 300 and PEG 10000 as lower and higher molecular weights, the separation between building blocks occurred after 60h and 48h for 180°C and 200°C, respectively. However, more collapses between primary building blocks were observed by using PEG 10000. The nanoparticles were composed of small building blocks and exhibited a spherical mesocrystal structure which was demonstrated from the TEM and scanning electron microscope (SEM) results. The investigation on the growth mechanism of the nanoparticles indicated that the formation of manganese ferrite was followed by the attachment and growth of primary building blocks and their Ostwald ripening process.
Keyword Manganese ferrite
Growth kinetics
Polyethylene glycol
Ostwald ripening
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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 8 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 27 Jan 2013, 00:06:40 EST by System User on behalf of Aust Institute for Bioengineering & Nanotechnology