Effect of reaction environment and in situ formation of the precursor on the composition and shape of iron oxide nanoparticles synthesized by the thermal decomposition method

CrystEngComm ◽  
2018 ◽  
Vol 20 (44) ◽  
pp. 7206-7220 ◽  
Author(s):  
Walid Baaziz ◽  
Benoit P. Pichon ◽  
Jean-Marc Grenèche ◽  
Sylvie Begin-Colin
Keyword(s):  
Thermal Decomposition ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Decomposition Method ◽  
Oxide Nanoparticles ◽  
Thermal Decomposition Method ◽  
Iron Precursor ◽  
In Situ Formation

In this work, we investigate the effect of the reaction environment and the in situ formation of an iron precursor on the synthesis of iron oxide nanoparticles (IONPs) through thermal decomposition.

Iron oxide magnetic nanoparticles synthesized by atmospheric microplasmas

2014 ◽  
Vol 32 ◽  
pp. 1460343 ◽  
Author(s):  
Ying Wang ◽  
Parvin Kaur ◽  
Augustine Tuck Lee Tan ◽  
Rajveer Singh ◽  
Paul Choon Keat Lee ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Decomposition Method ◽  
Plasma Discharge ◽  
Oxide Nanoparticles ◽  
Thermal Decomposition Method ◽  
Soft Ferromagnetic ◽  
Iron Oxide Magnetic Nanoparticles ◽  
High Possibility

This paper presents the synthesis of iron oxide nanoparticles using the atmospheric microplasma (AMP). The properties of iron oxide nanoparticles synthesized using AMP are compared with particles (i) formed in as-prepared solution and (ii) prepared using thermal decomposition method. Iron oxide nanoparticles prepared by all the 3 treatment methods exhibit quite soft ferromagnetic properties with coercivities less than 10 G. The AMP synthesis technique was found to be more efficient and better than thermal decomposition method due to ultra-shorter experiment time (around 2.5 min) as compared to 90 min required for thermal decomposition method. Moreover, AMP synthesized nanoparticles are better isolated and of smaller size than thermal decomposition ones. The effect of plasma discharge timings on synthesized nanoparticles has also been studied in this work. Coercivity of synthesized nanoparticles decreases with the increasing plasma discharge timings from 3 to 10 min. The nanoparticles synthesized using plasma discharge timing of 10 min exhibit the smallest coercivity of around 3 G. This suggests a high possibility of achieving super-paramagnetic nanoparticles by optimizing the plasma discharge timings of AMP.

Structural, Morphological, and Magnetic Characterization of Iron Oxide Nanoparticles Synthesized at Different Reaction Times via Thermal Decomposition Method

2021 ◽  
Vol 17 ◽  
Author(s):  
Nurcan Dogan ◽  
Fatmahan Ozel ◽  
Hasan Koten
Keyword(s):  
Thermal Decomposition ◽  
Iron Oxide ◽  
Reaction Time ◽  
Iron Oxide Nanoparticles ◽  
Decomposition Method ◽  
Reaction Times ◽  
Superparamagnetic Iron Oxide ◽  
Oxide Nanoparticles ◽  
Thermal Decomposition Method ◽  
Coated Surfaces

Background: Superparamagnetic iron oxide nanoparticles (SPIONs) were synthesized by the thermal decomposition method. Methods: In this work, the properties of the nanoparticles synthesized at different reaction times were investigated. Fourier transformed infrared spectroscopy (FTIR) and thermal analysis were carried out to characterize oleate adsorbed on the surface of nanoparticles. Results: The oleate-coated surfaces were obtained for all samples and the amount of oleate on the surfaces of the particles changed with the change in reaction time. The size, size distribution, and shape of SPIONs were determined by x-ray diffraction (XRD), transmission electron microscopy (SEM), dynamic light scattering (DLS). It was seen that changing the reaction time was affected the shape of the nanoparticles, but almost the same size nanoparticles were obtained with the increase of reaction time. The sample's crystallite size of 12.5-14.2 nm achieved with XRD is in good agreement with the mean size of 15-16.4 that was obtained by TEM results. Maximum magnetic saturation of the sample was achieved at 3h reaction time. Conclusion: The magnetic properties of iron oxide nanoparticles were characterized by electron-spin resonance (ESR), and physical properties measurement system (PPMS). All samples showed superparamagnetic behaviors at room temperature.

scholarly journals Monodisperse Iron Oxide Nanoparticles by Thermal Decomposition: Elucidating Particle Formation by Second-Resolved in Situ Small-Angle X-ray Scattering

2017 ◽  
Vol 29 (10) ◽  
pp. 4511-4522 ◽  
Author(s):  
A. Lassenberger ◽  
T. A. Grünewald ◽  
P. D. J. van Oostrum ◽  
H. Rennhofer ◽  
H. Amenitsch ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Small Angle ◽  
Particle Formation ◽  
Oxide Nanoparticles ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Study of Viscoelastic Behaviour of Cellulose Fluid Carrying Iron Oxide Nanoparticles for Injectable In-Situ Hyperthermia Application

2021 ◽  
Vol 8 (2) ◽  
pp. 1001-1009
Author(s):  
Preethi Ramadoss ◽  
◽  
Smrithy PB ◽  
Arivuoli Dakshanamoorthy ◽  
Goutam Singh Ningombam ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Viscoelastic Behaviour ◽  
Oxide Nanoparticles

Iron Oxide Nanoparticles Obtained from a Fe(II) - Chitosan Polymer Film

2010 ◽  
Vol 644 ◽  
pp. 51-55 ◽  
Author(s):  
Juan Fco Luna Martínez ◽  
E. Reyes-Melo ◽  
Virgilio González-González ◽  
A. Torres-Castro ◽  
Carlos Guerrero-Salazar ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Composite Film ◽  
Polymer Film ◽  
Iron Oxide Nanoparticles ◽  
Magnetic Behavior ◽  
Nanostructured Material ◽  
Oxide Nanoparticles ◽  
Transmission Electron ◽  
Alkaline Conditions

In this work, iron oxide nanoparticles (~5 nm) embedded in a chitosan polymer film, were synthesized. In order to obtain this nanostructured material, firstly a homogenous film of Fe(II)-chitosan was prepared. The resulting composite film has a thickness of ~140μm. Iron oxide nanoparticles were in-situ synthesized by treating the composite film with H2O2 under alkaline conditions. The morphological analysis by Transmission Electron Microscopy (TEM) shows the nanoparticles were embedded and stabilized in chitosan polymer film. The magnetic behavior was studied by magnetization measurements. The magnetization curves at room temperature showed that iron oxide nanoparticles have a superparamagnetic behavior.

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