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Ian Alfaro,Lorena Molina,Pablo Gonzalez,Jose Gaete,Fernando Valenzuela,Jose F. Marco,Cesar Saez,Carlos Basualto 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.78 No.-
The aim of this work is to produce a superparamagnetic core-shell adsorbent material composed ofmagnetite nanoparticles coated with a silica layer and functionalized with betaine for applicationsassociated with the recovery of molybdenum and rhenium anions from highly acidic aqueous solutions. The resulting nanoparticles with a quaternary amine surface were predominantly spherical with averagediameters of 14.3 1.7 nm. Adsorption experiments at pH values of 1-2 confirmed that it was possible touptake molybdate and perrhenate species using this adsorbent nanomaterial, achieving maximumloading capacities of 15 mg/gMNP for Mo and 19 mg/gMNP for Re.