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SRP. 2021; 12(1): 350-358

Synthesis of ZnO Nanoparticles from Azo Complexes and Study their Biological Activity

Sanbul H. Jerwan, Yousif H. Khalaf, Ahmed Mishaal Mohammed.


An azo complex was prepared from the reaction of Zn(II) with the ligand 8- [(4-hydroxyphenyl) azo] guanine. A reaction with Zn(II) gave a new complex Bis(8- [(4-hydroxyphenyl) azo] guanine) zinc (II) chloride at pH = 8. Spectrophotometry of the prepared complex was performed using UV-Visible and infrared spectra and micro-elemental analysis. Zinc oxide nanoparticles were then prepared from the prepared complex by thermal decomposition method. The nano particles characteristic to know its structural properties was conducted by using a scanning electron microscope, atomic force microscopy and X-ray diffraction. The biological activity of the azo-zinc complex and the zinc oxide nanoparticles was studied against E. coli, Ps. aeruginosa and S. aureus. The iso-zinc oxide nanocomplex was more effective than the iso-zinc complex against these genera of bacteria.

Key words: ZnO , Nanoparticles , Complex , Biological , guanine

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