Sonochemical Synthesis of Hematite Nanoparticles

Mihail Iacob

doi:10.19261/cjm.2015.10(1).06

Abstract

Hematite nanoparticles were prepared by a procedure consisting in sonication of μ3-oxo trinuclear iron(III) acetate of composition [Fe3O(OOCCH3)6(H2O)3]NO3∙4H2O, {Fe3O}NO3 as iron source, in strong basic conditions followed by thermal treatment at 600 C. The formation of the hematite was confi rmed by IR spectroscopy, X-ray powder diffraction and Raman spectroscopy while, the shape and size of the nanoparticles and their agglomeration were evidenced and estimated on the basis of the images taken with TEM techniques.

Highlights

Iron oxide based nanomaterials attracted attention of researchers due to their interesting properties and large applicability in various areas such as: diagnostic agents in magnetic resonance imaging (MRI) [1,2], magnetic hyperthermia [2], drug delivery [3], immunoassay [4], magnetic separation [5], and magneto-caloric refrigeration [6].There are various forms of iron oxides [7]
NPs, have been prepared by a procedure consisting in the decomposition of μ3-oxo trinuclear iron(III) acetate, {Fe O}NO, by sonication in strong alkaline aqueous medium, followed by neutralization and calcination, as is illustrated in Scheme 1
The oxide molecules are agglomerated in nanoparticles (NPs) of different sizes

Summary

Introduction

Iron oxide based nanomaterials attracted attention of researchers due to their interesting properties and large applicability in various areas such as: diagnostic agents in magnetic resonance imaging (MRI) [1,2], magnetic hyperthermia [2], drug delivery [3], immunoassay [4], magnetic separation [5], and magneto-caloric refrigeration [6].There are various forms of iron oxides [7]. Hematite nanoparticles proved to be effective catalyst in numerous reactions such as the decomposition of soot and NO in diesel exhausts [13], oxidation of CO [14], photocatalytic degradation of salicylic acid [15], and Fischerx Hematite nanoparticles could be applicable in water treatment technology for removing metal [18].

Results

Conclusion