Adsorption of uranium from aqueous solution by PAMAM dendron functionalized styrene divinylbenzene

► A new chelating resin PAMAMG3 -SDB has been synthesized for uranium adsorption. ► The maximum adsorption capacity was determined to be 130.25 mg g−1 at pH 5.5. ► Adsorption capacity increases linearly with increasing dendron generation. ► The adsorbed uranium shall be easily desorbed by simply adjusting the pH < 3. ► Quantitative adsorption of uranium was observed even at high ionic strength.