Immobilization of Thiadiazole Derivatives on Magnetite Mesoporous Silica Shell Nanoparticles in Application to Heavy Metal Removal from Biological Samples

In this report magnetite was synthesized by a coprecipitation method, then coated with a layer of silica. Another layer of mesoporous silica was added by a sol-gel method, then 5-amino-1,3,4-thiadiazole-thiol (ATT) was immobilized onto the synthesized nanoparticles with a simple procedure. This was...

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Bibliographic Details
Published in:AIP conference proceedings 2012-10, Vol.1311 (1)
Main Authors: Emadi, Masoomeh, Shams, Esmaeil
Format: Article
Language:English
Subjects:
ABSORPTION SPECTROSCOPY
ADSORPTION
BIOLOGICAL MATERIALS
BLOOD
BODY FLUIDS
CAPACITY
CHARGED PARTICLES
COHERENT SCATTERING
COPPER IONS
COPRECIPITATION
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
FOURIER TRANSFORMATION
HEAVY METALS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
IONS
IRON ORES
ISOTHERMS
KINETICS
LAYERS
MAGNETITE
MATERIALS
METALS
MICROSCOPY
MINERALS
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
ORES
OXIDE MINERALS
PARTICLES
PRECIPITATION
REMOVAL
SCATTERING
SEPARATION PROCESSES
SILICA
SOL-GEL PROCESS
SORPTION
SPECTRA
SPECTROSCOPY
TRANSFORMATIONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
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Description
Summary:In this report magnetite was synthesized by a coprecipitation method, then coated with a layer of silica. Another layer of mesoporous silica was added by a sol-gel method, then 5-amino-1,3,4-thiadiazole-thiol (ATT) was immobilized onto the synthesized nanoparticles with a simple procedure. This was followed by a series of characterizations, including transmission electron microscopy (TEM), FT-IR spectrum, elemental analysis and XRD. Heavy metal uptake of the modified nanoparticles was examined by atomic absorption spectroscopy. For further investigation we chose Cu{sup 2+} as the preferred heavy metal to evaluate the amount of adsorption, as well as the kinetics and mechanism of adsorption. Finally, the capacity of our nanoparticles for the heavy metal removal from blood was shown. We found that the kinetic rate of Cu{sup 2+} adsorption was 0.05 g/mg/min, and the best binding model was the Freundlich isotherm.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3530001