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Journal of Central South University

, Volume 23, Issue 4, pp 787–792 | Cite as

Synthesis, characterization and antimicrobial activity of alkaline ion-exchanged ZnO/bentonite nanocomposites

  • Hamideh Pouraboulghasem
  • Mohammad Ghorbanpour
  • Razieh Shayegh
  • Samaneh Lotfiman
Materials, Metallurgy, Chemical and Environmental Engineering

Abstract

Nanocomposites of zinc/bentonite clay were synthesized for use as an antibacterial material by a quick and simple alkaline ion exchange method. The synthesis of zinc doped bentonite nanocomposite was accomplished by placing bentonite in a melting bath of ZnSO4 for 10, 20, 40, 60 and 90 min. The complexes were characterized by XRD, SEM and DRS. XRD analyses and SEM observations confirmed the diffusion of zinc to the clay surfaces. Antibacterial activity tests against Escherichia coli showed that bentonite did not present any antibacterial properties, but after alkaline ion exchange treatment, inhibition was noted. The highest antibacterial activity was observed with ZnO/bentonite composite alkaline ion exchange for 60 and 90 min. Interestingly, the leaching test indicated that ZnO/bentonite did not present any risk for drinking water treatment.

Key words

alkaline ion exchange ZnO/bentonite nanocomposite antibacterial activity 

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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Hamideh Pouraboulghasem
    • 1
  • Mohammad Ghorbanpour
    • 2
  • Razieh Shayegh
    • 2
  • Samaneh Lotfiman
    • 2
  1. 1.Department of Food ScienceIslamic Azad University-Sarab BranchSarabIran
  2. 2.Chemical Engineering DepartmentUniversity of Mohaghegh ArdabiliArdabilIran

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