Preparation of iron nanoparticles by reduction of acicular /spl beta/-FeOOH particles

Acicular /spl beta/-FeOOH nanoparticles were prepared either by oxidation of ferrous chloride in a lamellar liquid crystal phase at 60/spl deg/C, or by forced hydrolysis of ferric chloride at 80/spl deg/C. The particles prepared in the liquid crystal phase were rod-shaped, with an average length of...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 1998-07, Vol.34 (4), p.1141-1143
Main Authors: Chen, Min, Bo Tang, Nikles, D.E.
Format: Article
Language:English
Subjects:
Assembly
Crystalline materials
Ethanol
Hydrogen
Iron
Liquid crystals
Nanoparticles
Oxidation
Shape
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Acicular /spl beta/-FeOOH nanoparticles were prepared either by oxidation of ferrous chloride in a lamellar liquid crystal phase at 60/spl deg/C, or by forced hydrolysis of ferric chloride at 80/spl deg/C. The particles prepared in the liquid crystal phase were rod-shaped, with an average length of 85 nm and an aspect ratio of 12. Sodium borohydride reduction of these particles gave needle-shaped iron particles with lengths of about 80 nm. /spl beta/-FeOOH particles prepared by forced hydrolysis of ferric chloride were ellipsoid-shaped with and average length of 70 nm and an aspect ratio of 7. Unfortunately, when these particles were reduced the iron particles did not maintain the shape and size. They were large chains of spheres or clusters of small particles with a distribution of sizes and shapes.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.706418