Use of different rapid mixing devices for controlling the properties of magnetite nanoparticles produced by precipitation

Magnetite nanoparticles were precipitated by the classic Massart's method in a 2.5L stirred tank reactor where the injection of reagent solutions was effectuated by different micro-mixers (T-tube and Hartridge-Roughton rapid mixing devices). The specific surface area, the average particle size...

Full description

Saved in:
Bibliographic Details
Published in:Journal of crystal growth 2012-03, Vol.342 (1), p.21-27
Main Authors: Wei, Li, Hervé, Muhr, Edouard, Plasari
Format: Article
Language:English
Subjects:
A1. Fluid flows
B1. Nanomaterials
B1. Oxides
B2. Magnetic materials
Chemical synthesis methods
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Devices
Diffraction
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetite
Materials science
Methods of nanofabrication
Nanoparticles
Nanopowders
Nanoscale materials and structures: fabrication and characterization
Particle size
Physics
Raman spectroscopy
Specific surface
Tanks
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:Magnetite nanoparticles were precipitated by the classic Massart's method in a 2.5L stirred tank reactor where the injection of reagent solutions was effectuated by different micro-mixers (T-tube and Hartridge-Roughton rapid mixing devices). The specific surface area, the average particle size and the particle size distribution were highly influenced by changing operating parameters. Laser Diffraction, BET adsorption, Energy-Dispersive X-ray Spectroscopy (EDX), Raman spectroscopy and Transmission Electron Microscopy (TEM) were used for characterizing magnetite nanoparticles. Especially, Hartridge-Roughton micromixer appears to be the most efficient mixing device for producing magnetite nanoparticles. The average particle size of magnetite nanoparticles prepared by Hartridge-Roughton rapid mixing device was less than 10nm and the EDX and Raman spectroscopy shows that the particle purity is quite high. ► In this work, we precipitate nanoparticles with a good quality control. ► We precipitate magnetite nanoparticles with high purity. ► We use rapid mixing devices to control the precipitation process. ► We control the product quality by using different operating parameters.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2011.05.031