scholarly journals Preparation and Characterization of Nano-Sized (Mg<sub>(x)</sub>Fe<sub>(1–x)</sub>O/SiO<sub>2</sub>) (x = 0.1) Core-Shell Nanoparticles by Chemical Precipitation Method

2012 ◽  
Vol 01 (03) ◽  
pp. 37-43 ◽  
Author(s):  
Mohsen Ahmadipour ◽  
Mozhgan Hatami ◽  
Kalagadda Venkateswara Rao
2011 ◽  
Vol 306-307 ◽  
pp. 410-415
Author(s):  
Li Sun ◽  
Fu Tian Liu ◽  
Qi Hui Jiang ◽  
Xiu Xiu Chen ◽  
Ping Yang

Core/shell type nanoparticles with an average diameter of 20nm were synthesized by chemical precipitation method. Firstly, Monodisperse Fe3O4 nanoparticles were synthesized by solvethermal method. FeSO4ž7H2O and NaBH4 were respectively dissolved in distilled water, then moderated Fe3O4 particles and surfactant(PVP) were ultrasonic dispersed into the FeSO4ž7H2O solution. The resulting solution was stirred 2 h at room temperature. Fe could be deposited on the surface of monodispersed Fe3O4 nanoparticles to form core-shell particles. The particles were characterized by using various experimental techniques, such as transmission electron microscopy (TEM), X-ray diffraction (XRD), AGM and DTA. The results suggest that the saturation magnetization of the nanocomposites is 100 emu/g. The composition of the samples show monodisperse and the sides of the core/shell nanoparticles are 20-30nm. It is noted that the formation of Fe3O4/Fe nanocomposites magnetite nanoparticles possess superparamagnetic property.


2021 ◽  
Author(s):  
Anna Frank ◽  
Thomas Gänsler ◽  
Stefan Hieke ◽  
Simon Fleischmann ◽  
Samantha Husmann ◽  
...  

This work presents the synthesis of MoO2/MoS2 core/shell nanoparticles within a carbon nanotube network and their detailed electron microscopy investigation in up to three dimensions. The triple-hybrid core/shell material was...


Nanoscale ◽  
2018 ◽  
Vol 10 (19) ◽  
pp. 9186-9191 ◽  
Author(s):  
Nathalie Claes ◽  
Ramesh Asapu ◽  
Natan Blommaerts ◽  
Sammy W. Verbruggen ◽  
Silvia Lenaerts ◽  
...  

Using electron microscopy, polymer encapsulated silver nanoparticles were visualized and their coverage, molecular structure and plasmonic properties could be investigated.


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