Enhanced L10 chemical ordering and FePt∕Fe3O4 core/shell structure formation in Zn-doped FePt nanoparticles

2007 ◽  
Vol 90 (17) ◽  
pp. 173117 ◽  
Author(s):  
Ki-Eun Kim ◽  
Myung-Ki Lee ◽  
Yun-Mo Sung ◽  
Tae Geun Kim
Keyword(s):  
Structure Formation ◽  
Shell Structure ◽  
Core Shell ◽  
Fept Nanoparticles ◽  
Chemical Ordering ◽  
Core Shell Structure ◽  
Fe3o4 Core

A new route for core–shell structure formation in criticality against conventional wisdom

2018 ◽  
Vol 216 ◽  
pp. 70-72 ◽  
Author(s):  
Yinli Peng ◽  
Liang Zhang ◽  
Lei Wang ◽  
Xiaowei Lei ◽  
Wenjing Yao ◽  
...  
Keyword(s):  
Structure Formation ◽  
Shell Structure ◽  
Conventional Wisdom ◽  
Core Shell ◽  
Core Shell Structure

Liquid–liquid phase equilibrium and core–shell structure formation in immiscible Al–Bi–Sn alloys

2016 ◽  
Vol 122 (4) ◽  
Author(s):  
Mingyang Li ◽  
Peng Jia ◽  
Xiaofei Sun ◽  
Haoran Geng ◽  
Min Zuo ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Liquid Phase ◽  
Structure Formation ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure

scholarly journals Design of Scorodite@Fe3O4 Core–Shell Materials and the Fe3O4 Shell Prevents Leaching of Arsenic from Scorodite in Neutral and Alkaline Environments

Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 523
Author(s):  
Yang Wang ◽  
Zhihao Rong ◽  
Xincun Tang ◽  
Shan Cao
Keyword(s):  
Photoelectron Spectroscopy ◽  
Shell Structure ◽  
Molar Ratio ◽  
Alkaline Solutions ◽  
Arsenic Content ◽  
Core Shell ◽  
X Ray ◽  
Core Shell Structure ◽  
The Stability ◽  
Fe3o4 Core

In recent years, arsenic pollution has seriously harmed human health. Arsenic-containing waste should be treated to render it harmless and immobilized to form a stable, solid material. Scorodite (iron arsenate) is recognized as the best solid arsenic material in the world. It has the advantages of high arsenic content, good stability, and a low iron/arsenic molar ratio. However, scorodite can decompose and release arsenic in a neutral and alkaline environment. Ferroferric oxide (Fe3O4) is a common iron oxide that is insoluble in acid and alkali solutions. Coating a Fe3O4 shell that is acid- and alkali-resistant on the surface of scorodite crystals will improve the stability of the material. In this study, a scorodite@Fe3O4 core–shell structure material was synthesized. The synthesized core–shell material was detected by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman, and energy-dispersive X-ray spectroscopy (EDS) techniques, and the composition and structure were confirmed. The synthesis condition and forming process were analyzed. Long-term leaching tests were conducted to evaluate the stability of the synthesized scorodite@Fe3O4. The results indicate that the scorodite@Fe3O4 had excellent stability after 20 days of exposure to neutral and weakly alkaline solutions. The inert Fe3O4 shell could prevent the scorodite core from corrosion by the external solution. The scorodite@Fe3O4 core–shell structure material was suitable for the immobilization of arsenic and has potential application prospects for the treatment of arsenic-containing waste.

scholarly journals Core–shell structure of chemically synthesised FePt nanoparticles: a comparative study

2007 ◽  
Vol 17 (16) ◽  
pp. 1579-1588 ◽  
Author(s):  
Michaël Delalande ◽  
Pierre R. Marcoux ◽  
Peter Reiss ◽  
Yves Samson
Keyword(s):  
Comparative Study ◽  
Shell Structure ◽  
Core Shell ◽  
Fept Nanoparticles ◽  
Core Shell Structure

scholarly journals Simple hydrothermal synthesis of Fe3O4-PEG nanocomposite

2013 ◽  
Vol 11 (9) ◽  
pp. 1527-1532 ◽  
Author(s):  
Yasmeen Junejo ◽  
Abdulhadi Baykal ◽  
Huseyin Sözeri
Keyword(s):  
Polyethylene Glycol ◽  
Hydrothermal Synthesis ◽  
Fe3o4 Nanoparticles ◽  
Shell Structure ◽  
Polymer Coating ◽  
Core Shell ◽  
Vibrating Sample Magnetometer ◽  
One Step ◽  
Core Shell Structure ◽  
Fe3o4 Core

AbstractAbstract We report a one-step hydrothermal synthesis of Fe3O4 nanoparticles coated with Polyethyleneglycol (PEG). The formation of the Fe3O4 core and the polymer coating took place simultaneously. Fe3O4/polyethylene glycol (PEG) magnetic nanocomposite with a core-shell structure with a 17±7 nm crystallite size prepared by simple hydrothermal method. VSM ( Vibrating Sample Magnetometer) analysis proved the superparamagnetic character of the nanocomposite. Graphical abstract

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