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Fe3O4@Ag and Ag@Fe3O4 Core–Shell Nanoparticles for Radiofrequency Shielding and Bactericidal Activity

2021 ◽  
Author(s):  
Nagarajan Padmavathy ◽  
Indranil Chakraborty ◽  
Abishek Kumar ◽  
Anindo Roy ◽  
Suryasarathi Bose ◽  
...  
Keyword(s):  
Bactericidal Activity ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Fe3o4 Core

A systematic study of Au@Fe3O4 Core@Shell nanocomposite synthesized by the thermal decomposition method

2021 ◽  
pp. 150290
Author(s):  
G.B. Oliveira-Filho ◽  
J.J. Atoche-Medrano ◽  
F. F. H. Aragon ◽  
J.C. Mantilla Ochoa ◽  
D.G. Pacheco-Salazar ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Systematic Study ◽  
Decomposition Method ◽  
Core Shell ◽  
Thermal Decomposition Method ◽  
Fe3o4 Core

scholarly journals Preparation and Characterization of Silica-Coated Iron Oxide Nanoparticles (Fe3O4@SiO2 NPs)

2021 ◽  
Vol 18 (1) ◽  
pp. 161
Author(s):  
Nurul Izza Taib ◽  
Famiza Abdul Latif ◽  
Nur Diyana Syazwani Zambri
Keyword(s):  
Iron Oxide ◽  
Alkaline Medium ◽  
Biomedical Applications ◽  
Tetraethyl Orthosilicate ◽  
Oxide Nanoparticles ◽  
Hydrolysis And Condensation ◽  
Average Size ◽  
Superparamagnetic Properties ◽  
Fe3o4 Core

In this study, this SiO2 has been coated on the surface of Fe3O4 (Fe3O4@SiO2) by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) under alkaline medium at 80oC. It was found that only 500  mL TEOS is required to obtain the best coated Fe3O4 core structures which has been confirmed from its TEM micrograph. FTIR analyses revealed the formation of Si-O-Si bonds at 1084.2–1101.4 cm-1 hence confirmed that SiO2 has been successfully coated the Fe3O4 core. From the FESEM analyses, the average size of silica was ~ 50 -70 nm.  EDX of the Fe3O4@SiO2 showed that silica had been effectively bonded onto the surface of Fe3O4. The VSM measurements confirmed the superparamagnetic properties of Fe3O4@SiO2 that is desirable for biomedical applications.

Synthesis of Fe/Fe3O4 core-shell nanoparticles by electrical explosion of the iron wire in an oxygen-containing atmosphere

2021 ◽  
Vol 23 (3) ◽  
Author(s):  
A. S. Lozhkomoev ◽  
A. V. Pervikov ◽  
S. O. Kazantsev ◽  
A. F. Sharipova ◽  
N. G. Rodkevich ◽  
...  
Keyword(s):  
Electrical Explosion ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Iron Wire ◽  
Core Shell Nanoparticles ◽  
Fe3o4 Core
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