Preparation, Characterization and Study the Photodecolorization of Mixed-Ligand Binuclear Co(II) Complex of Schiff Base by ZnO

https://doi.org/10.22146/ijc.44192

Suhad Kareem Abass(1), Jassim Abbas Al-Hilfi(2), Sawsan Khudhair Abbas(3), Luma Majeed Ahmed(4*)

(1) Department of Chemistry, College of Science, University of Kerbala, Kerbala 56001, Iraq
(2) Department of Chemistry, Collage of Science, University of Misan, Misan 62001, Iraq
(3) Department of Chemistry, College of Science, University of Kerbala, Kerbala 56001, Iraq
(4) Department of Chemistry, College of Science, University of Kerbala, Kerbala 56001, Iraq
(*) Corresponding Author

Abstract


In this work, a new mixed-ligand binuclear Co(II) complex of Schiff base was prepared. Moreover, the characterizations of this prepared complex were performed by melting points, UV-Vis spectra, FT-IR spectra, and magnetic susceptibility measurements, then compared with metal and ligand solutions. It has been discovered that the Schiff bases with Co(II) ion forming a binuclear complex with a stoichiometry of molar ratio 1:2 from “metal:ligand”. The photodecolorization of this complex was done under UV light for ZnO's suspension solution. The results of this photodecolorization showed that the greatest efficiency for this respond with use of ZnO dose is 300 mg/100 mL and at an initial pH equal to 7. The decolorization activation energy for this complex is small value and equal to11.289 kJ mol–1. Additionally, this thermodynamic study for this reaction is non-spontaneous, endothermic and less random.

Keywords


Schiff base; binuclear Co(II) complex; photodecolorization; ZnO; UV-A light

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DOI: https://doi.org/10.22146/ijc.44192

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