New phosphazene nanospheres anchored Fe(III), Co(II) and Cu(II) Schiff base complexes as efficient catalysts in oxidation of phenol

  • Abbas TarassoliEmail author
  • Tahereh Sedaghat
  • Zeinab Ansari-Asl
Original Paper


New phosphazene nanosphere-supported Fe(III), Co(II) and Cu(II) Schiff base complexes were prepared and their catalytic activities were investigated. The synthesized compounds were characterized by various techniques such as FT-IR, XRD, TGA, SEM, EDX, and atomic absorption spectroscopy. The average diameters of these nanosphere compounds are about 250 nm and they are spherically uniform with very good stability. The effect of the support on catalytic activity of the metal complexes was determined by investigating the oxidation of phenol under different experimental conditions. These complexes exhibit high activity in oxidation of phenol under relatively mild condition in the presence of urea hydrogen peroxide (UHP) as an oxidant. The influence of various parameters such as amount of catalyst, phenol:UHP molar ratio, and temperature on the rate of the oxidation reaction of phenol was also evaluated. Based on the characterization results and the experimental evidences a plausible mechanism has been proposed.


Phosphazene nanospheres Catalytic oxidation Phenol Metal-coordinated Schiff base 



The authors wish to thank the Shahid Chamran University, Research Council for financial support of this project (Grant 1392). The financial support of the Iran Nanotechnology Initiative Council is also appreciated.


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Copyright information

© Iranian Chemical Society 2019

Authors and Affiliations

  • Abbas Tarassoli
    • 1
    Email author
  • Tahereh Sedaghat
    • 1
  • Zeinab Ansari-Asl
    • 1
  1. 1.Department of Chemistry, Faculty of ScienceShahid Chamran University of AhvazAhvazIran

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