| Clustering Behavior in Aqueous Slurry of Magnetite
Nanoparticles at Different Temperatures by
Photon Scattering |
Srividhya J. Iyengar,* Mathew Joy and Swapankumar Ghosh*
Pages : 183-188
DOI : 10.1080/0371750X.2017.1299591 |
| Abstract |
| This paper describes ‘one-pot’ diethylene glycol assisted chemical route
for the synthesis of ultra-stable aqueous Fe3O4 nanoparticle dispersion
with narrow size distribution. The resulting particles were characterized
in terms of structure, morphology, particle size, zeta potential,
dispersibility and colloidal properties. Thermal analysis as well as FTIR
data indicated the presence of organic content in the material. The
potential for obtaining a ferrofluid was also demonstrated and its
colloidal stability was studied at different temperatures over months by
observing hydrodynamic size and surface charge by photon correlation
spectroscopy. Outer shell of surface active DEG used in the present
study not only provided the stability to produce ‘one-shell cluster
dispersion’, which was found to have no effect on heating and magnetic
field, but also can be highly useful for biomedical applications due to
their known bio-compatibility.
[Keywords: Magnetite, Precipitation, Ferrofluids, Ultra-stable] |
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