scholarly journals CMR2009: 10.03: Monitoring cell confinement and biotransformation of iron oxide nano-particles using magnetic measurements

2009 ◽  
Vol 4 (6) ◽  
pp. 290-291
Author(s):  
M. Levy ◽  
C. Wilhelm ◽  
N. Luciani ◽  
F. Lagarde ◽  
N. Vats ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Measurements ◽  
Nano Particles

Superconductivity of embedded lead nano particles in metallic and amorphous matrices

2001 ◽  
Vol 703 ◽  
Author(s):  
K. Chattopadhyay ◽  
V. Bhattacharya ◽  
A. P. Tsai
Keyword(s):  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
Magnetic Measurements ◽  
Microstructural Characterization ◽  
Rapid Solidification Processing ◽  
Nano Particles ◽  
Superconducting Transition ◽  
Solidification Processing ◽  
Embedded Particles

ABSTRACTNanodispersed lead in metallic and amorphous matrices was synthesized by rapid solidification processing. The optimum microstructure was tailored to avoid percolation of the particles. With these embedded particles it is possible to study quantitatively the effect of size on the superconducting transition temperature by carrying out quantitative microstructural characterization and magnetic measurements. Our results suggest the role of the matrices in enhancement or depression of superconducting transition temperature of lead. The origin of this difference in behavior with respect to different matrices and sizes is discussed.

scholarly journals GREEN SYNTHESIS OF SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLE FROM FICUS CARICA FRUIT EXTRACT, CHARACTERIZATION STUDIES AND ITS APPLICATION ON DYE DEGRADATION STUDIES

2017 ◽  
Vol 10 (3) ◽  
pp. 125
Author(s):  
Kirubanandan Shanmugam ◽  
Tharunya P ◽  
Subha V ◽  
Sandhaya S ◽  
Renganathan S
Keyword(s):  
Iron Oxide ◽  
Ferrous Sulfate ◽  
Dye Degradation ◽  
Superparamagnetic Iron Oxide ◽  
Ethanolic Extract ◽  
Sulfate Solution ◽  
Single Step ◽  
Nano Particles ◽  
Ficus Carica ◽  
Fe3o4 Nps

ABSTRACTObjective: The synthesis of nanoparticles (NPs) has become a matter of great interest in recent times due to their various advantageous propertiesand applications in a variety of fields. Metal NPs are being increasingly used in many sectors, and there is growing interest in the biological andenvironmental safety of their production.Methods: In this study, iron oxide NPs (Fe3O4-NPs) were synthesized from fruits of Ficus carica using a rapid, single step and completely greenbiosynthetic method by reduction of ferrous sulfate solution with F. carica ethanolic extract. The prepared Fe3O4-NPs were investigated by X-raydiffraction, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy.Results: The report emphasizes the effect of superparamagnetic Fe3O4-NPs on the degradation rate of hazardous dyes acid blue.Conclusion: To conclude, Fe3O4-NPs were prepared from fruits of F. carica using a rapid, single step and completely green biosynthetic method byreduction of ferrous sulfate solution with F. carica ethanolic extract.Keywords: Ficus carica, Ethanolic extract, Reduction, Ferrous sulfate, Superparamagnetic iron oxide nano particles, Dye degradation. 

scholarly journals Effects of Iron Oxide Nano-Particles on the Intestinal Tissue of Common Carp, Cyprinus Carpio

2019 ◽  
Vol 13 (3) ◽  
pp. 33-38
Author(s):  
Shila Omidzahir ◽  
◽  
Maliheh Alijantabar Bayi ◽  
Fatemeh Kardel ◽  
Mohammad Mazandarani ◽  
...  
Keyword(s):  
Small Intestine ◽  
Iron Oxide ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Nano Particles ◽  
Iron Accumulation ◽  
Intestinal Epithelial ◽  
Intestinal Tissue ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

Background: The application of nano-particles (NPs) in various industries is growing. Since their toxicity is not clearly understood, they can cause adverse effects on the environment. The aim of this study was to evaluate the histopathological effects of iron oxide nano-particles on the small intestine of common carp, Cyprinus carpio. Methods: Four experimental treatments were designed (15 fish/treatment). Treatment 1 was the controls while Treatments 2, 3 and 4 were experimental. The experimental groups were exposed to 50, 75 and the 100 mg/L of iron oxide NPs, respectively. On days 14, 21 and 28, the fish were randomly picked from each tank, samples of the small intestine were dissected, and were examined for both the accumulation of the iron NPs and the tissue histopathologies. Results: The highest concentration of iron accumulation was detected for Treatment 3 on day 21, compared to all other treatment groups (p<0.05). However, iron accumulation in the tissue declined unexpectedly after day 21 despite the continued treatments at 100 mg/L of the iron NPs. The histopathological examinations revealed that the treatment beyond 21 days caused damages to the intestinal epithelial cells, including enterocytes, villi and the goblet cells. Conclusion: This study demonstrated that the effect of iron oxide NPs on the small intestinal tissue was dependant on the dose and duration of exposure. We conclude that the iron accumulation in the small intestine declined despite increasing the iron oxide NPs concentration and the exposure duration secondary to damages caused to the intestinal epithelial cell layer.

scholarly journals Multifunctional Electrochemical Properties of Synthesized Non-Precious Iron Oxide Nanostructures

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 751 ◽  
Author(s):  
Ruby Phul ◽  
M. A. Majeed Khan ◽  
Meryam Sardar ◽  
Jahangeer Ahmed ◽  
Tokeer Ahmad
Keyword(s):  
Iron Oxide ◽  
Room Temperature ◽  
Electrode Materials ◽  
Magnetic Measurements ◽  
High Specific Surface Area ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Chemical Route ◽  
X Ray ◽  
Onset Potential ◽  
Electrochemical Water Splitting

Magnetic Fe3O4 nanostructures for electrochemical water splitting and supercapacitor applications were synthesized by low temperature simple wet-chemical route. The crystal structure and morphology of as-acquired nanostructures were examined by powder X-ray diffraction and transmission electron microscopy. Magnetic measurements indicate that the as-synthesized Fe3O4 nanostructures are ferromagnetic at room temperature. The synthesized nanostructures have a high-specific surface area of 268 m2/g, which affects the electrocatalytic activity of the electrode materials. The purity of the as-synthesized nanostructures was affirmed by Raman and X-ray Photoelectron studies. The electrochemical activity of the magnetic iron oxide nanoparticles (MIONPs) for the hydrogen evolution reaction (HER) and supercapacitors were investigated in alkaline medium (0.5 M KOH) versus Ag/AgCl at room temperature. The electrocatalysts show low onset potential (~0.18 V) and Tafel slope (~440 mV/dec) for HER. Additionally, the specific capacitance of MIONPs was investigated, which is to be ~135 ± 5 F/g at 5 mV/s in 1 M KOH.

Iron-oxide nano-particles effect on the blood hemodynamics in atherosclerotic coronary arteries

2018 ◽  
Vol 177 ◽  
pp. 293-300 ◽  
Author(s):  
Ali Nematollahzadeh ◽  
Amin Dabaleh ◽  
Navid Ahadi-Jomairan ◽  
Sajad Torabi
Keyword(s):  
Iron Oxide ◽  
Coronary Arteries ◽  
Nano Particles

Comparison and Characterization of Fe3O4 Nanoparticles Synthesized by Conventional Magnetic Stirring and Sonochemical Method

2018 ◽  
Vol 24 (8) ◽  
pp. 5681-5686 ◽  
Author(s):  
Amruta Udaykumar Badnore ◽  
Mrunal Anand Salvi ◽  
Nilesh Lakshaman Jadhav ◽  
Aniruddha Bhalchandra Pandit ◽  
Dipak Vitthal Pinjari
Keyword(s):  
Particle Size ◽  
Iron Oxide ◽  
Acoustic Cavitation ◽  
Nano Particles ◽  
Synthesis Methods ◽  
Sonochemical Method ◽  
Nano Particle ◽  
Ferrous Chloride ◽  
Magnetic Iron Oxide ◽  
Magnetic Stirring

In this particular study, magnetic iron oxide (Fe3O4) nano-particle synthesis was carried using conventional magnetic stirring and sonochemical (acoustic cavitation) method. Raw materials used for the synthesis include— ferrous chloride (FeCl2), ferric chloride (FeCl3) and sodium hydroxide (NaOH), where NaOH was used as a precipitating agent. The magnetic iron oxide nano-particles were characterized using X-ray diffraction (XRD), Zetasizer, Field emission gun scanning electron microscopy (FEG-SEM) and Vibrating sample magnetometer to determine crystallite size, hydrodynamic particle size, particle size and magnetic hysteresis loop respectively. It was found that the nano-particle size obtained by both the synthesis methods ranged from 20 nm–50 nm. On comparison of the two mentioned synthesis methods, it was inferred that the acoustic cavitation method is more energy efficient and takes considerably less time for synthesis as compared to conventional magnetic stirring method.

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