Fabrication of electrochemically nonporous NiO–ZnO/TiO2 nanotubes/Ti plates for photocatalytic disinfection of microbiological pollutants

  • Neda Mohaghegh
  • Masoud FarajiEmail author
  • Amir Abedini
Original Paper


Nonporous NiO–ZnO/TiO2 nanotubes/Ti photocatalyst plates were fabricated via facile electrochemical method. The structural and morphological properties of the modified plates were investigated by scanning electron microscopy and X-ray diffraction, while their photoelectrochemical (PEC) characterizations were evaluated by transient photocurrent responses and electrochemical impedance spectroscopy. Antimicrobial activities of the fabricated plates against Escherichia coli bacteria and Candida albicans fungi were studied under UV light irradiation. The results indicated that the photocatalytic and PEC activities of the NiO–ZnO/TiO2 nanotubes/Ti plates are much higher than those of TiO2 nanotubes/Ti, ZnO/TiO2 nanotubes/Ti and NiO/TiO2 nanotubes/Ti. The synergetic effect among NiO, ZnO and TiO2 nanotubes motivated a fast charge separation as well as a slow electron/hole recombination, thus increasing the photocatalytic performance of the nonporous NiO–ZnO/TiO2 nanotubes/Ti photocatalyst plate.


Microbiological pollutants Heterogeneous catalysis NiO–ZnO hybrids Photocatalytic disinfection 



The authors wish to express thank the office of vice chancellor of research of Urmia University for the financial support.


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Copyright information

© Iranian Chemical Society 2019

Authors and Affiliations

  1. 1.Department of Petroleum, Mining and Material Engineering, Central Tehran BranchIslamic Azad UniversityTehranIran
  2. 2.Electrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry FacultyUrmia UniversityUrmiaIran
  3. 3.Department of Physical Chemistry, Faculty of ChemistryIsfahan University of TechnologyIsfahanIran

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