What is it about?
This manuscript presents a simple method for obtaining a chitosan/PEO/NiFe2O4 composite with photocatalytic activity under sunlight for the degradation of Methyl Orange organic dye.
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Why is it important?
The composite comprises two polymers that form a matrix containing nickel ferrite nanoparticles, NiFe2O4. The polymeric matrix comprises 70% chitosan and 30% polyethylene oxide (PEO). Due to its chemical structure and microstructure, each polymer provides specific properties to the chitosan/PEO/NiFe2O4 film. The PEO provides mechanical stability to the polymeric substrate and the chitosan provides catalytic properties for the removal of the organic dye. NiFe2O4 nanoparticles are a semiconductor oxide with photocatalytic activity in the range of visible radiation (bandgap of 1.9 eV); therefore, the dye degradation occurs under sunlight.
Perspectives
The experiment shows that for there to be a maximum photocatalytic degradation, there must be a sufficiently high nanoparticle surface/volume ratio in which the crystalline order of the material is lost little.
Dr. Ing. Marcelo R. Pagnola
INTECIN (UBA - CONICET)
Read the Original
This page is a summary of: Chitosan/PEO/NiFe2O4 Composite for the Removal of Methyl Orange Dye from Aqueous Solutions: the Effect of NiFe2O4 Nanoparticle Size, Journal of Cluster Science, December 2024, Springer Science + Business Media,
DOI: 10.1007/s10876-024-02752-4.
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