Silicate-based multifunctional nanostructured materials with magnetite and Prussian blue: application to cesium uptake
2014; Royal Society of Chemistry; Volume: 4; Issue: 67 Linguagem: Inglês
10.1039/c4ra06023g
ISSN2046-2069
AutoresMargarita Darder, Yorexis González, Pîlar Aranda, Eduardo Ruiz‐Hitzky,
Tópico(s)Covalent Organic Framework Applications
ResumoMultifunctional nanostructured materials with superparamagnetic and adsorbent properties towards cesium ions were developed by a simple procedure consisting of the one-pot synthesis of magnetite and Prussian blue nanoparticles (NPs) in the presence of a porous inorganic solid that acts as a support or nanoplatform simultaneously assembling both types of NPs. Sepiolite, a hydrated magnesium silicate with fibrous morphology, microporosity, large specific surface area and bearing hydroxyl groups in its external surface, was here chosen as the nanoplatform supporting the in situ synthesized NPs, although this methodology was also successfully proved using other inorganic solids like silica gel. The efficacy of the resulting materials in the adsorption of cesium ions from aqueous media, even in the presence of a high concentration of sodium chloride, would allow their application in the removal of radioactive cesium-137 with the advantage of an easy and quick recovery of the pollutant-loaded adsorbents by means of a magnet.
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