Synthesis of amino acid functionalized Fe3O4 nanoparticles for adsorptive removal of Rhodamine B

Abstract L-Aspartic acid (L-Asp) functionalized magnetite nanoparticles (Fe 3 O 4 NPs) were synthesized through a facile co-precipitation method using L-Asp as capping agent. UV–Vis, FTIR, XRD, SEM, EDS, TEM, and VSM techniques used to investigate the formation, morphology, elemental composition, magnetic properties of Fe NPs. Highly crystalline spherical shaped pure phase NPs successfully amino The measurement analysis confirms superparamagnetic nature capped adsorption efficiency was assessed by removal Rhodamine B (RhB). optimum found be 7.7 mg g −1 1 mL adsorbent, 30 L RhB at pH 7 25 °C. regression ( R 2 adj ) standard deviation (SD) validate both kinetic isotherm models. Avrami fractional-order Liu models selected best isotherms, respectively. maximum capacity Q o toward Liu’s model 10.44 .