High-capacity adsorption of hexavalent chromium from aqueous solution using magnetic microspheres by surface dendrimer graft modification

► The magnetic microsphere with surface dendrimer was synthesized. ► The magnetic microspheres were applied for the adsorption of Cr(VI). ► The effects of conditions on adsorption were investigated. ► The maximum adsorption capacity of Cr(VI) was fitted at 231.8 mg/g.