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- W3189642834 abstract "Pure water for analytical use must be free of heavy metals and others contaminants. On-site analysis requires portable water purification devices to improve the quality of water for analytical purposes. Simple water purifiers made of nanoscale magnetic nanoparticles combine the surface useful properties possessed by the nanoscale materials with the possibility of an easy separation from the aqueous media by an external magnetic field after the treatment. The present chapter focuses on the preparation of magnetic nanoparticles with different coatings in order to evaluate their sorption capacity toward metal ions and dyes. In particular, bioorganic substrates were used to coat and template the nanoparticles combining new available surface groups which are involved in the adsorption mechanism. The advantages of the use of soluble bioorganic materials are their low cost, and the strategy of recycle and reuse of waste products. Also, 15 nm size magnetite nanoparticles composed of a crystalline magnetite core and coated with Yerba Mate (Ilex paraguariensis) extract, which preferentially incorporates surface carboxylates, phenols, and some organic N groups, is capable of reversibly adsorbing the cationic colorant methylene blue from water. Paramagnetic iron-containing hydroxyapatite (Fe-nAp) nanoparticles and waste bioorganic substrates template iron-containing hydroxyapatite (SBO–Fe-nAp) nanoparticles show particular selectivity in adsorption experiments involving Cu(ii) and Pb(ii) ions from water depending on the surface chemistry of the hydroxyapatite-based adsorbent." @default.
- W3189642834 created "2021-08-16" @default.
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- W3189642834 date "2021-08-04" @default.
- W3189642834 modified "2023-10-08" @default.
- W3189642834 title "Improvement of Adsorbing Properties of Magnetic Nanomaterials by Bioorganic Substrate-mediating Synthesis" @default.
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- W3189642834 doi "https://doi.org/10.1039/9781839162756-00054" @default.
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