scholarly journals Synthesis and Evaluation of Magnetic Nanoparticles for Biomedical Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Nydeia W. Bolden ◽  
Vijaya K. Rangari ◽  
Shaik Jeelani ◽  
Seyhan Boyoglu ◽  
Shree R. Singh
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Ethylene Glycol ◽  
Mossbauer Spectroscopy ◽  
Iron Pentacarbonyl ◽  
Poly Vinyl Alcohol ◽  
Sonochemical Method ◽  
Power Ultrasound ◽  
Mößbauer Spectroscopy

In this study, iron oxide (IO) nanoparticles from various precursors have been synthesized using sonochemical method and characterized for their structural variability and toxicity. The iron oxide (IO) precursor solutions were prepared from iron acetate (IA), iron pentacarbonyl (IP), decalin, PEG (poly(ethylene glycol)), EG (ethylene glycol), PVA (poly(vinyl alcohol)), β-cyclodextrin (CD), and distilled water. These precursor solutions were irradiated with high power ultrasound for 3 hours and heat treated as needed. These as-prepared iron oxide nanoparticles were characterized using X-ray diffraction (XRD), Mössbauer spectroscopy, transmission electron microscopy (TEM), and magnetization measurements. XRD results show that all the particles are highly crystalline in nature and the particles sizes measured from TEM are approximately 5–20 nm. The maximum magnetization was observed for IO-IP at approximately 60.17 emu/g and the minimum was approximately 30.56 emu/g for IO-IA. These results confirm that the particles are superparamagnetic (SPM) in nature. Mössbauer spectroscopy verified the magnetic nanoparticles are purely Fe3O4 and particles sizes varied by the nature of the precursor and coatings.

Mössbauer spectroscopy study of magnetic iron oxide nanoclusters in a biocomposite based on poly(3-hydroxybutyrate) and chitosan

2015 ◽  
Vol 463 (2) ◽  
pp. 176-178 ◽  
Author(s):  
V. E. Prusakov ◽  
Yu. V. Maksimov ◽  
K. N. Nishchev ◽  
A. V. Golubiev ◽  
A. L. Iordanskii ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Mossbauer Spectroscopy ◽  
Spectroscopy Study ◽  
Magnetic Iron Oxide ◽  
Mößbauer Spectroscopy

Mössbauer spectroscopy for characterizing biodegradation of magnetic nanoparticles in a living organism

ICAME 2011 ◽  
2013 ◽  
pp. 401-404
Author(s):  
Ilya Nikitich Mischenko ◽  
Michail Alexandrovich Chuev ◽  
Valeriy Mihailovich Cherepanov ◽  
Michail Alexeevich Polikarpov
Keyword(s):  
Mössbauer Spectroscopy ◽  
Magnetic Nanoparticles ◽  
Mossbauer Spectroscopy ◽  
Living Organism ◽  
Mößbauer Spectroscopy

Mössbauer spectroscopy of the new iron oxide Fe3B7O13(OH)

2010 ◽  
pp. 101-104
Author(s):  
Shin Nakamura ◽  
Yorihiko Tsunoda ◽  
Ippei Nomoto ◽  
Hirohiko Sato
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy

Mössbauer spectroscopy of protein-passivated iron oxide nanoparticles

ICAME 2011 ◽  
2013 ◽  
pp. 269-272
Author(s):  
Heming Huang ◽  
Ramona Christmann ◽  
Roland Ulber ◽  
Volker Schünemann
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Mossbauer Spectroscopy ◽  
Oxide Nanoparticles ◽  
Mößbauer Spectroscopy

scholarly journals Investigation of phase transformations of iron nanoparticles during thermal annealing

2019 ◽  
Vol 201 ◽  
pp. 02003
Author(s):  
Dinara Tulebayeva ◽  
Assel Yermekova ◽  
Artem Kozlovskiy ◽  
Maxim Zdorovets
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Phase Transformations ◽  
Mossbauer Spectroscopy ◽  
Spectroscopy Data ◽  
X Ray Diffraction ◽  
Mößbauer Spectroscopy ◽  
Structure Of Nanoparticles ◽  
Subsequent Phase ◽  
Annealing Defects

Structural properties and phase composition of nanoparticles based on iron oxide were studied. Mossbauer spectroscopy, X-ray diffraction, and scanning electron microscopy were used for the analysis of phase transformations. According to XRD and Mossbauer spectroscopy data, an increase in the annealing temperature, as well as the subsequent phase transformations of magnetite into maghemite and then to hematite, indicate an improvement in the structure and a decrease in microdistortions in the lattice as a result of annealing defects and vacancies. According to Mossbauer spectroscopy data at temperatures above 400°C, the lines of characteristic FeO, which are characteristic for disordered iron oxide, are observed, which also confirms the improvement of the crystal structure of nanoparticles.

Sign in / Sign up

Export Citation Format

Share Document