Application of a water stable zinc(II) glutamate metal organic framework for photocatalytic degradation of organic dyes

  • W. P. Wu
  • W. C. Liu
  • S. W. Qiu
  • A. Q. Ma
  • W. Dai
  • Y. Qian
  • A. Kumar
Keywords: Glutamate, MOF, DOS, Photocatalysis


A water stable metal-organic framework (MOF) having structural formula {[Zn(H2O)(L)]∙xsolvent}n (L = glutamate) (1), was prepared in aqueous medium by simple mixing the Zn(II) salt and glutamate ligand at room temperature. The single crystal X-ray diffraction study indicates that 1 crystallizes in an orthorhombic system with a space group of P212121 in which the Zn(II) center adopts pseudo-octahedral geometry. The bridging interactions through carboxylate groups in 1 generates a 2D structure in 1 comprising of the microporous channels. The UV/Vis diffuse-reflection spectroscopy for 1 had been performed which indicated that MOF possess semiconducting nature with a band gap of 3.23 eV and therefore may be a potential candidate as photocatalyst. The photocatalytic behavior of 1 against photo-degratdation of organic dyes has been investigated. The possible photocatalytic activity of 1 against organic dyes have been addressed using density of states (DOS) calculations.


KEY WORDS: Glutamate, MOF, DOS, Photocatalysis


Bull. Chem. Soc. Ethiop. 2019, 33(1), 43-50



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eISSN: 1726-801X
print ISSN: 1011-3924