Evaluation of the optical and magnetic properties of novel Nd0.9Zn0.1FeO3 perovskite nanoparticles and their adsorption of Pb2+ ions from water

Nd 0.9 Zn 0.1 FeO 3 was prepared in a single-phase with an average crystallite size of 25.82 nm using a citrate combustion technique. The energy dispersive X-ray assures the chemical formula of the sample. The elemental mapping of Zn-doped NdFeO 3 illustrates the good homogeneous distribution of the elements in the sample. Nd 0.9 Zn 0.1 FeO 3 has antiferromagnetic properties with weak ferromagnetic components and has good UV absorbance. The values of the band gap for the direct and indirect transitions are 1.473 eV and 1.250 eV, respectively. The adsorption of nickel(II), cobalt(II), chrome(VI), cadmium(II), and lead(II) ions has been studied at pH 7. The highest removal efficiency (η = 73.72%) was observed for the lead ions from water. The current study has examined the kinetics, recoveries, and mechanisms of utilizing Nd 0.90 Zn 0.10 FeO 3 to remove Pb 2+ ions from water. The optimum conditions for the absorbing Pb 2+ are pH 7 and a contact time of 60 min. The Freundlich isotherm model is the best model for the absorption of Pb 2+ ions. While, the pseudo-second-order kinetic model describes the kinetic adsorption data. The sample has a good efficiency for removing Pb 2+ ions from water several times.