ZnO Nanostructure Shape Effects in Photocatalysis of Methylene Blue

Open Access

Year : 2025 | Volume : 13 | Special Issue 01 | Page : 722 727
    By

    Ramya M,

  • Jitha P Marydasan,

  • Swathy Satheesh,

  • V P N Nampoori,

  • Kailasnath M,

  1. Assistant Professor on contract, Department of Physics, NSS College, Ottappalam, Palakkad, Kerala, India
  2. MSc Student, Department of Physics, Ansar Womens College, Perumpilavu, Thrissur, Kerala, India
  3. MSc Student, Department of Physics, Ansar Women’s College, Perumpilavu, Thrissur, Kerala, India
  4. Professor (Rtd), International School of Photonics, Cochin University of Science and Technology (CUSAT), Kerala, India
  5. Professor, International School of Photonics, Cochin University of Science and Technology (CUSAT), Kerala, India

Abstract

Nowadays, dyes are used in the food industry, textile industry, paper industry, hair coloring, light-harvesting arrays, photoelectrochemical cells, etc. Most of the dyes are nonbiodegradable, toxic, carcinogenic, and consist of organic compounds. These dye wastages are discharged into water bodies and the environment causing serious hazards to the marine ecosystem as well as the humans extensively. To treat toxic dyes traditional methods such as adsorption, activated carbon, ultrafiltration, and reverse osmosis are used for dye removal. But, in these processes pollution from one form transfers to another form causing secondary pollution. In the present study, efficient ZnO nanostructure  nanodot, nanorod, nanoplate, and nanoflower) photocatalysts were prepared by ultrasonication-assisted solution method using ethylene glycol, 1-butanol, acetic acid, and water as solvent. ZnO has a wide band gap and it can be excited using UV light. For excellent photocatalysis, electron-hole recombination is suppressed by trapping charge carriers at defect states. Thus, the photocatalytic activity of ZnO is modified by changing its shape, size, and doping with transition metal ions. Here, we discussed the degradation of methylene blue (MB) using different dimensional ZnO nanostructures as a potential photocatalyst. The morphology and surface area of the synthesized samples were analyzed using TEM and BET analysis. Solvent physicochemical properties affect the growth kinetics and morphological evolution. ZnO nanoflower exhibits excellent photocatalytic performance than the other structures towards methylene blue degradation due to their larger surface area. Higher surface area enhances the dye adsorption and photodegradation efficiency to 85% under exposure to visible light after 20 minutes.

Keywords: ZnO Nanostructure, Methylene Blue, Photocatalysis, Degradation, Surface area.

[This article belongs to Special Issue under section in Journal of Polymer and Composites (jopc)]

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How to cite this article:
Ramya M, Jitha P Marydasan, Swathy Satheesh, V P N Nampoori, Kailasnath M. ZnO Nanostructure Shape Effects in Photocatalysis of Methylene Blue. Journal of Polymer and Composites. 2024; 13(01):722-727.
How to cite this URL:
Ramya M, Jitha P Marydasan, Swathy Satheesh, V P N Nampoori, Kailasnath M. ZnO Nanostructure Shape Effects in Photocatalysis of Methylene Blue. Journal of Polymer and Composites. 2024; 13(01):722-727. Available from: https://journals.stmjournals.com/jopc/article=2024/view=188621


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Special Issue Open Access Original Research
Volume 13
Special Issue 01
Received 26/07/2024
Accepted 15/10/2024
Published 10/12/2024
Publication Time 137 Days
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