One-Pot Environmentally Friendly Synthesis of Nanomaterials Based on Phytate-Coated FeO Nanoparticles for Efficient Removal of the Radioactive Metal Ions Sr, Y and (UO) from Water.

We report the fast (three minutes) synthesis of green nanoparticles based on nanoparticles coated with the natural organic receptor phytate for the recognition and capture of Sr, Y, and (UO. The new material shows excellent retention for (UO), 97%; these values were 73% and 100% for Sr and Y, respectively. Recovery of the three radioactive metal ions occurs through a non-competitive process.

Effective Elimination and Biodegradation of Polycyclic Aromatic Hydrocarbons from Seawater through the Formation of Magnetic Microfibres.

Supramolecular aggregates formed between polycyclic aromatic hydrocarbons and either naphthalene or perylene-derived diimides have been anchored in magnetite magnetic nanoparticles. The high affinity and stability of these aggregates allow them to capture and confine these extremely carcinogenic contaminants in a reduced space. In some cases, the high cohesion of these aggregates leads to the formation of magnetic microfibres of several microns in length, which can be isolated from the solution by the direct action of a magnet.

Influence of the aromatic surface on the capacity of adsorption of VOCs by magnetite supported organic-inorganic hybrids.

It has been recently evidenced that hybrid magnetic nanomaterials based on perylene diimide (PDI) dopamine and iron oxide nanoparticles are useful for the adsorption and determination of volatile organic compounds (VOCs). However, NDI compounds are expensive and difficult to handle compared to smaller size diimides. Therefore, in this manuscript a combined experimental and theoretical investigation is reported including the analysis of the effect of changing the aromatic surface on the ability of these magnetite supported organic-inorganic hybrid nanoparticles (NPs) to adsorb several aromatic and non-aromatic VOCs.

Removal of Au and Ag from aqueous media with magnetic nanoparticles functionalized with squaramide derivatives.

New magnetic hybrid nanoparticles of FeO coated with organosulfur-squaramide compounds are prepared. The modified-nanoparticles show a good coordination for Ag and Hg cations in water, and present a high affinity for Au ions. The behaviour of the squaramide-coated nanoparticles differs significantly from that previously reported for nanoparticles used as Au scavengers.

A Very Highly Efficient Magnetic Nanomaterial for the Removal of PAHs from Aqueous Media.

Two new hybrid magnetic recyclable nanomaterials are developed. These new materials are based on bisimide perylene dopamine or bisimide perylene 3-aminopropyltriethoxysilane and iron oxide nanoparticles. One of them, the bisimide perylene dopamine, has proven to be very efficient in the removal, by magneto filtration, of 15 carcinogenic polycyclic aromatic compounds (PAHs), especially naphthalene, acenaphthene, anthracene, phenanthrene, and fluorene.