Highly efficient lead removal from water by Nd0.90Ho0.10FeO3 nanoparticles and studying their optical and magnetic properties
M. M. Arman
Abstract:Ho-doped NdFeO3 was synthesized using the citrate method. The X-ray diffraction (XRD) illustrated that Nd0.90Ho0.10FeO3 was crystalline at the nanoscale, with a crystallite size of 39.136 nm. The field emission scanning electron microscope (FESEM) illustrated the porous nature of Nd0.90Ho0.10FeO3, which increases the active sites to absorb the heavy metals on the sample surface. Energy-dispersive X-ray (EDX) data assures the prepared sample has the chemical formula Nd0.90Ho0.10FeO3. The magnetic properties of … Show more
“…The average crystallite size (L) of Nd 0.9 Zn 0.1 FeO 3 is 25.817 nm. Equation ( 2 ) was used to calculate the lattice parameters 29 . Figure 1 XRD of Nd 0.9 Zn 0.1 FeO 3 and ICDD card number 01-089-6644.…”
Section: Resultsmentioning
confidence: 99%
“…FESEM of the Nd 0.9 Zn 0.1 FeO 3 nanoparticles, which have nanoscale Fig. 2 illustrates the agglomerated particles due to their magnetic properties and the preparation procedure 29 . The origin of the magnetic behavior of Nd 0.9 Zn 0.1 FeO 3 is the antiparallel spines of Fe 3+ ions.…”
Nd0.9Zn0.1FeO3 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 NdFeO3 illustrates the good homogeneous distribution of the elements in the sample. Nd0.9Zn0.1FeO3 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 Nd0.90Zn0.10FeO3 to remove Pb2+ ions from water. The optimum conditions for the absorbing Pb2+ are pH 7 and a contact time of 60 min. The Freundlich isotherm model is the best model for the absorption of Pb2+ ions. While, the pseudo-second-order kinetic model describes the kinetic adsorption data. The sample has a good efficiency for removing Pb2+ ions from water several times.
“…The average crystallite size (L) of Nd 0.9 Zn 0.1 FeO 3 is 25.817 nm. Equation ( 2 ) was used to calculate the lattice parameters 29 . Figure 1 XRD of Nd 0.9 Zn 0.1 FeO 3 and ICDD card number 01-089-6644.…”
Section: Resultsmentioning
confidence: 99%
“…FESEM of the Nd 0.9 Zn 0.1 FeO 3 nanoparticles, which have nanoscale Fig. 2 illustrates the agglomerated particles due to their magnetic properties and the preparation procedure 29 . The origin of the magnetic behavior of Nd 0.9 Zn 0.1 FeO 3 is the antiparallel spines of Fe 3+ ions.…”
Nd0.9Zn0.1FeO3 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 NdFeO3 illustrates the good homogeneous distribution of the elements in the sample. Nd0.9Zn0.1FeO3 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 Nd0.90Zn0.10FeO3 to remove Pb2+ ions from water. The optimum conditions for the absorbing Pb2+ are pH 7 and a contact time of 60 min. The Freundlich isotherm model is the best model for the absorption of Pb2+ ions. While, the pseudo-second-order kinetic model describes the kinetic adsorption data. The sample has a good efficiency for removing Pb2+ ions from water several times.
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