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Effect of pH Value on the Bandgap Energy and Particles Size for Biosynthesis of ZnO Nanoparticles: Efficiency for Photocatalytic Adsorption of Methyl Orange

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  • Bachir Gherbi

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Unit of Renewable Energy Development in Arid Zones (UDERZA), University of El Oued, El-Oued 39000, Algeria)

  • Salah Eddine Laouini

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria)

  • Souhaila Meneceur

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria)

  • Abderrhmane Bouafia

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria)

  • Hadia Hemmami

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria)

  • Mohammed Laid Tedjani

    (Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria
    Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued 39000, Algeria)

  • Gobika Thiripuranathar

    (Institute of Chemistry Ceylon, College of Chemical Sciences, Welikada, Rajagiriya 10107, Sri Lanka)

  • Ahmed Barhoum

    (NanoStruc Research Group, Chemistry Department, Faculty of Science, Helwan University, Helwan 11795, Egypt
    School of Chemical Sciences, Dublin City University, D09 V209 Dublin, Ireland)

  • Farid Menaa

    (Department of Nanomedicine and Advanced Technologies, CIC-Fluorotronics, Inc., San Diego, CA 92037, USA)

Abstract

In this paper, ZnO nanoparticles (NPs) were greenly synthesized at different pH values of 4, 6, 9.5, and 11 via Portulaca oleracea leaf extract, and the effect of pH on the optical and structural properties was studied. UV-Vis spectrophotometers and FTIR spectroscopy characterized the optical properties. Meanwhile, the structural properties were characterized via Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). Furthermore, their photocatalytic dye degradation was examined against methyl orange dye. The characterization results have confirmed the successful biosynthesis of ZnO nanoparticles with a size ranging between 22.17 to 27.38 nm. The synthesis pH value significantly influenced ZnO NPs’ optical and morphological properties. The results have also indicated the high performance of the greenly synthesized ZnO NPs for dye degradation.

Suggested Citation

  • Bachir Gherbi & Salah Eddine Laouini & Souhaila Meneceur & Abderrhmane Bouafia & Hadia Hemmami & Mohammed Laid Tedjani & Gobika Thiripuranathar & Ahmed Barhoum & Farid Menaa, 2022. "Effect of pH Value on the Bandgap Energy and Particles Size for Biosynthesis of ZnO Nanoparticles: Efficiency for Photocatalytic Adsorption of Methyl Orange," Sustainability, MDPI, vol. 14(18), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11300-:d:910517
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    References listed on IDEAS

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    1. Udari Wijesinghe & Gobika Thiripuranathar & Haroon Iqbal & Farid Menaa, 2021. "Biomimetic Synthesis, Characterization, and Evaluation of Fluorescence Resonance Energy Transfer, Photoluminescence, and Photocatalytic Activity of Zinc Oxide Nanoparticles," Sustainability, MDPI, vol. 13(4), pages 1-22, February.
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