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

  • Materials, Metallurgy, Chemical and Environmental Engineering
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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.

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Authors and Affiliations

  1. Department of Food Science, Islamic Azad University-Sarab Branch, Sarab, Iran

    Hamideh Pouraboulghasem

  2. Chemical Engineering Department, University of Mohaghegh Ardabili, Ardabil, Iran

    Mohammad Ghorbanpour, Razieh Shayegh & Samaneh Lotfiman

Authors
  1. Hamideh Pouraboulghasem
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  2. Mohammad Ghorbanpour
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  3. Razieh Shayegh
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  4. Samaneh Lotfiman
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Correspondence to Mohammad Ghorbanpour.

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Pouraboulghasem, H., Ghorbanpour, M., Shayegh, R. et al. Synthesis, characterization and antimicrobial activity of alkaline ion-exchanged ZnO/bentonite nanocomposites. J. Cent. South Univ. 23, 787–792 (2016). https://doi.org/10.1007/s11771-016-3124-y

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  • DOI: https://doi.org/10.1007/s11771-016-3124-y

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