Composite nanoplatelets combining soft-magnetic iron oxide with hard-magnetic barium hexaferrite

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2688-2697 ◽  
Author(s):  
D. Primc ◽  
D. Makovec
Keyword(s):  
Iron Oxide ◽  
Aqueous Suspension ◽  
Barium Hexaferrite ◽  
Composite Nanoparticles ◽  
Soft Magnetic ◽  
Magnetic Iron Oxide ◽  
Sandwich Type ◽  
Type Composite ◽  
Core Nanoparticles

Bi-magnetic, sandwich-type, composite nanoparticles were synthesized by the topotactic growth of a shell of soft-magnetic maghemite (γ-Fe2O3) on platelet core nanoparticles of hard-magnetic barium hexaferrite (BaFe12O19) in an aqueous suspension.

DNA Separation Using Gold/Magnetic Iron-oxide Composite Nanoparticles

2005 ◽  
Vol 877 ◽  
Author(s):  
Takuya Kinoshita ◽  
Satoshi Seino ◽  
Yohei Otome ◽  
Yoshiteru Mizukoshi ◽  
Takashi Nakagawa ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Beads ◽  
Gamma Ray ◽  
Composite Nanoparticles ◽  
Dna Separation ◽  
Fluorescence Technique ◽  
Magnetic Iron Oxide ◽  
Oxide Composite ◽  
Gamma Ray Irradiation

AbstractAmounts of oligonucleotides adsorbed onto the Au/γ-Fe2O3 composite nanoparticles synthesized by gamma-ray irradiation and picked up by a magnet were evaluated using fluorescence technique. The adsorbing capacity of the oligonucleotides on our nanoparticles are larger than a commercial magnetic beads for a separation of biomolecules.

Synthesis of gold/magnetic iron oxide composite nanoparticles for biomedical applications with good dispersibility

2006 ◽  
Vol 99 (8) ◽  
pp. 08H101 ◽  
Author(s):  
Satoshi Seino ◽  
Takafumi Kusunose ◽  
Tohru Sekino ◽  
Takuya Kinoshita ◽  
Takashi Nakagawa ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Biomedical Applications ◽  
Composite Nanoparticles ◽  
Magnetic Iron Oxide ◽  
Oxide Composite

TEM observation of iron oxide pillars in montmorillonite

1990 ◽  
Vol 48 (4) ◽  
pp. 882-883
Author(s):  
H. Mori ◽  
Y. Murata ◽  
H. Yoneyama ◽  
H. Fujita
Keyword(s):  
Aqueous Solution ◽  
Iron Oxide ◽  
Fine Particles ◽  
Aqueous Suspension ◽  
Volume Ratio ◽  
Exchange Capacity ◽  
Nano Composites ◽  
Pillared Montmorillonite ◽  
Topographic Features ◽  
Transmission Electron

Recently, a new sort of nano-composites has been prepared by incorporating such fine particles as metal oxide microcrystallites and organic polymers into the interlayer space of montmorillonite. Owing to their extremely large specific surface area, the nano-composites are finding wide application[1∼3]. However, the topographic features of the microstructures have not been elucidated as yet In the present work, the microstructures of iron oxide-pillared montmorillonite have been investigated by high-resolution transmission electron microscopy.Iron oxide-pillared montmorillonite was prepared through the procedure essentially the same as that reported by Yamanaka et al. Firstly, 0.125 M aqueous solution of trinuclear acetato-hydroxo iron(III) nitrate, [Fe3(OCOCH3)7 OH.2H2O]NO3, was prepared and then the solution was mixed with an aqueous suspension of 1 wt% clay by continuously stirring at 308 K. The final volume ratio of the latter aqueous solution to the former was 0.4. The clay used was sodium montmorillonite (Kunimine Industrial Co.), having a cation exchange capacity of 100 mequiv/100g. The montmorillonite in the mixed suspension was then centrifuged, followed by washing with deionized water. The washed samples were spread on glass plates, air dried, and then annealed at 673 K for 72 ks in air. The resultant film products were approximately 20 μm in thickness and brown in color.

Magnetic separation of amino acids by gold/iron-oxide composite nanoparticles synthesized by gamma-ray irradiation

2005 ◽  
Vol 293 (1) ◽  
pp. 106-110 ◽  
Author(s):  
Takuya Kinoshita ◽  
Satoshi Seino ◽  
Yoshiteru Mizukoshi ◽  
Yohei Otome ◽  
Takashi Nakagawa ◽  
...  
Keyword(s):  
Amino Acids ◽  
Iron Oxide ◽  
Magnetic Separation ◽  
Gamma Ray ◽  
Composite Nanoparticles ◽  
Oxide Composite ◽  
Gamma Ray Irradiation

scholarly journals Magnetic iron oxide/clay nanocomposites for adsorption and catalytic oxidation in water treatment applications

2020 ◽  
Vol 18 (1) ◽  
pp. 1148-1166
Author(s):  
Ganjar Fadillah ◽  
Septian Perwira Yudha ◽  
Suresh Sagadevan ◽  
Is Fatimah ◽  
Oki Muraza
Keyword(s):  
Iron Oxide ◽  
Water Treatment ◽  
Photocatalytic Oxidation ◽  
Low Cost ◽  
Synthesis Method ◽  
Chemical Oxidation ◽  
Magnetic Iron Oxide ◽  
Oxidation Processes ◽  
Recent Developments ◽  
Physical And Chemical

AbstractPhysical and chemical methods have been developed for water and wastewater treatments. Adsorption is an attractive method due to its simplicity and low cost, and it has been widely employed in industrial treatment. In advanced schemes, chemical oxidation and photocatalytic oxidation have been recognized as effective methods for wastewater-containing organic compounds. The use of magnetic iron oxide in these methods has received much attention. Magnetic iron oxide nanocomposite adsorbents have been recognized as favorable materials due to their stability, high adsorption capacities, and recoverability, compared to conventional sorbents. Magnetic iron oxide nanocomposites have also been reported to be effective in photocatalytic and chemical oxidation processes. The current review has presented recent developments in techniques using magnetic iron oxide nanocomposites for water treatment applications. The review highlights the synthesis method and compares modifications for adsorbent, photocatalytic oxidation, and chemical oxidation processes. Future prospects for the use of nanocomposites have been presented.

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