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Synthesis of ZnFe2O4/SiO2 composites derived from a diatomite template
- Source :
- Bioinspirationbiomimetics. 2(1)
- Publication Year :
- 2007
-
Abstract
- A novel porous ZnFe2O4/SiO2 composite product has been generated with a template-directed assembly method from porous diatomite under different synthesis conditions, such as precursor concentrations (metallic nitrates), calcination temperature and diatomite type. The phase composition and morphology of all the materials were examined by x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results indicated that an inherited hierarchical porous structure from the diatomite template can be obtained, and the synthesis conditions were found to have clear effects on the formation of the ZnFe2O4/SiO2 composite. The ideal composite of ZnFe2O4/SiO2 can be obtained through optimization of diatomite template type, precursor solution and calcination temperature. Furthermore, the adsorption abilities of two types of diatomites were analyzed in detail using FTIR spectra and nitrogen adsorption measurements etc, which proved that A-diatomite (Shengzhou-diatomite) is better than B-diatomite (Changbai-diatomite) on the aspect of adsorbing Zn and Fe ions, and of forming the ZnFe2O4.
- Subjects :
- Diffraction
Materials science
Morphology (linguistics)
Surface Properties
Composite number
Biophysics
Mineralogy
Biochemistry
law.invention
Metal
Adsorption
law
Biomimetic Materials
Materials Testing
Nanotechnology
Calcination
Particle Size
Porosity
Engineering (miscellaneous)
Diatoms
Silicon Dioxide
Diatomaceous Earth
Nanostructures
Chemical engineering
Transmission electron microscopy
Zinc Compounds
visual_art
visual_art.visual_art_medium
Molecular Medicine
Crystallization
Biotechnology
Subjects
Details
- ISSN :
- 17483190
- Volume :
- 2
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Bioinspirationbiomimetics
- Accession number :
- edsair.doi.dedup.....2482f81eb759bbb75b5617df6b2de4b5