Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

The magnetic adsorbent, Fe3O4@[Ni(HL)2]2H2[P2Mo5O23]·2H2O (Fe3O4@1), is synthesized by employing the nanoparticles Fe3O4 and polyoxometalate hybrid 1. Zero-field-cooled (ZFC) and field-cooled (FC) curves show that the blocking temperature of Fe3O4@1 was at 120 K. Studies of Fe3O4@1 removing cationic...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2019-08, Vol.24 (17), p.3128
Main Authors: Li, Jie, Si, Chen, Zhao, Haiyan, Meng, Qingxi, Chang, Bowen, Li, Mingxue, Liu, Hongling
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Cationic dyes
Color removal
Dyes
Fe3O4
Hydrogen bonding
Hydrogen bonds
Hysteresis loops
Iron oxides
Ligands
Magnetic fields
Morphology
nanocomposite
Nanocomposites
Nanoparticles
Particle size
Pollutant removal
Pollutants
polyoxometalate
Selectivity
Vibration
Wastewater
Wastewater pollution
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Summary:The magnetic adsorbent, Fe3O4@[Ni(HL)2]2H2[P2Mo5O23]·2H2O (Fe3O4@1), is synthesized by employing the nanoparticles Fe3O4 and polyoxometalate hybrid 1. Zero-field-cooled (ZFC) and field-cooled (FC) curves show that the blocking temperature of Fe3O4@1 was at 120 K. Studies of Fe3O4@1 removing cationic and anionic dyes from water have been explored. The characterization of Fe3O4@1, effects of critical factors such as dosage, the concentration of methylene blue (MB), pH, adsorption kinetics, isotherm, the removal selectivity of substrate and the reusability of Fe3O4@1 were assessed. The magnetic adsorbent displayed an outstanding removal activity for the cationic dye at a broad range of pH. The adsorption kinetics and isotherm models revealed that the adsorption process of Fe3O4@1 was mainly governed via chemisorption. The maximum capacity of Fe3O4@1 adsorbing substance was 41.91 mg g−1. Furthermore, Fe3O4@1 showed its high stability by remaining for seven runs of the adsorption-desorption process with an effective MB removal rate, and could also be developed as a valuable adsorbent for dyes elimination from aqueous system.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules24173128