Enhancement of photocatalytic degradation of 4-nitrophenol by integrating Ag nanoparticles with ZnO/HZSM-5 nanocomposite

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  • Baharak Divband1,
  • Azadeh Jodaie*2,
  • Masumeh Khatmian1,
  1. Inorganic Chemistry Department, Faculty of Chemistry, University of Tabriz, Iran.
  2. Industrial Nanotechnology research center, Islamic Azad University, Tabriz Branch, Tabriz, Iran.

Published in Issue 2024-02-25

How to Cite

Divband, B., Jodaie, A., & Khatmian, M. (2024). Enhancement of photocatalytic degradation of 4-nitrophenol by integrating Ag nanoparticles with ZnO/HZSM-5 nanocomposite. Iranian Journal of Catalysis, 9(1). http://oiccpress.com/ijc/article/view/4025

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Abstract

In this paper, Ag/ZnO/HZSM-5ternary nanocomposites with different Ag loadings were prepared by the photo precipitation method. The prepared photocatalysts were characterized by XRD, BET, SEM and TEM. The photocatalytic activity of ZnO/HZSM-5 for 4-nitrophenol (4-NP) degradation was increased by silver doping. Effects of various parameters such as the initial concentration of 4-NP, pH and Ag loading on 4-NP degradation were studied. The best activities were obtained for the 3% Ag-10% ZnO/HZSM-5 nanocatalysts at pH 7.9, 1 g Lâ1 of the catalyst and 5 ppm of 4-NP. LangmuirâHinshelwood (LâH) model was proposed for the rate equation of the 4-NP degradation.

Keywords

  • Ag/ZnO/HZSM-5,
  • Photo precipitation method,
  • Photocatalytic oxidation,
  • Ternary nanocomposites
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