Synthesis of mesoporous maghemite with high surface area and its adsorptive properties

Mesoporous maghemite (γ-Fe2O3) with high surface area was prepared by the thermal decomposition of Fe–urea complex ([Fe(CON2H4)6](NO3)3) with the aid of cetyltrimethyl ammonium bromide (CTAB), and its adsorption ability for the removal of fluoride was investigated. X-ray diffraction (XRD), nitrogen...

Full description

Saved in:
Bibliographic Details
Published in:Solid state sciences 2012-07, Vol.14 (7), p.833-839
Main Authors: Asuha, S., Zhao, Y.M., Zhao, S., Deligeer, W.
Format: Article
Language:English
Subjects:
Adsorption
Cross-disciplinary physics: materials science
rheology
Crystallites
Diffraction
Exact sciences and technology
Fluorides
Maghemite
Magnetic properties
Materials science
Materials synthesis
materials processing
Mesoporous material
Physics
Porous materials
granular materials
Specific materials
Specific surface
Surface area
Surface chemistry
Thermal decomposition
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:Mesoporous maghemite (γ-Fe2O3) with high surface area was prepared by the thermal decomposition of Fe–urea complex ([Fe(CON2H4)6](NO3)3) with the aid of cetyltrimethyl ammonium bromide (CTAB), and its adsorption ability for the removal of fluoride was investigated. X-ray diffraction (XRD), nitrogen adsorption–desorption measurements, transmission electron micrograph (TEM) observations, and magnetic measurements show that the γ-Fe2O3 has a mesoporous structure and its crystallite size, specific surface area, and magnetic properties can be controlled by varying the content of CTAB in [Fe(CON2H4)6](NO3)3. The maximum adsorption capacity of the mesoporous γ-Fe2O3 for fluoride is estimated to be 7.9 mg/g, which suggests that the mesoporous γ-Fe2O3 is an excellent adsorbent for fluoride. [Display omitted] ► A simple method is introduced to prepare mesoporous γ-Fe2O3. ► γ-Fe2O3 with a high surface area and good magnetic properties can be obtained. ► This powder is quite effective for the removal of fluoride.
ISSN:1293-2558
1873-3085
DOI:10.1016/j.solidstatesciences.2012.04.011