Zinc oxide nanoparticles development using phosphorylated alginate template matrix for water treatment applications: I. removal of methylene blue dye

In the current work, a highly chelating alginate derivative (phosphorylated alginate [PhAlg]) used as a template for the development of zinc oxide (ZnO) nanoparticles for the first time. Zn2+ ions were employed for gelation of the phosphorylated alginate, and then the ZnO nanoparticles were formed v...

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Bibliographic Details
Published in:Desalination and water treatment 2020-01, Vol.174, p.376-388
Main Authors: Omer, A.M., Tamer, T.M., Abou-Taleb, W.M., Roston, G.D., Hafez, A.M., Shehata, E.F., Khalifa, R.E., Mohyeldin, M.S.
Format: Article
Language:English
Subjects:
Dye removal
Isotherm
Kinetics
Nanoparticles
Phosphonate alginate
Polymer template
Thermodynamics
Zinc oxide
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Summary:In the current work, a highly chelating alginate derivative (phosphorylated alginate [PhAlg]) used as a template for the development of zinc oxide (ZnO) nanoparticles for the first time. Zn2+ ions were employed for gelation of the phosphorylated alginate, and then the ZnO nanoparticles were formed via annealing of (Zn-PhAlg) hydrogel. Different particles sizes of the ZnO nanoparticles were obtained by variation of the used PhAlg solution concentration. Properties of the obtained ZnO nanoparticles were verified using characterization tools such as FT-IR, SEM, and surface area measurements. Batch experiments were used to study the ability of the prepared zinc oxide nanoparticles for removing methylene blue (MB) from its aqueous solutions under different operational conditions such as initial MB concentration, pH, adsorbent dosage, contact time and temperature. The results further fitted with different kinetic and isotherm models. Moreover, the thermodynamics of the adsorption process was investigated.
ISSN:1944-3986
1944-3986
DOI:10.5004/dwt.2020.24865