Fast and Excellent Enhanced Photocatalytic Degradation of Methylene Blue Using Silver-Doped Zinc Oxide Submicron Structures under Blue Laser Irradiation

Samer H. Zyoud, Ibrahim S. Yahia, Moyad Shahwan, Ahed H. Zyoud, Heba Y. Zahran, Mohamed Sh Abdel-wahab, Malek G. Daher, Mohamed Nasor, Ghaseb N. Makhadmeh, Nageeb Hassan, Akram Ashames, Naser Qamhieh

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

In this study, laser-assisted chemical bath synthesis (LACBS) was used to prepare pure and Ag-doped ZnO submicron structures using a simplified hydrothermal approach that did not require a catalyst. The photocatalytic degradation of Methylene Blue was investigated under blue laser irradiation (λ = 444.5 nm and I = 8000 lx). The doping concentration varied (2%, 4%, 6%, 8%, tando 10%) and was prepared by LACBS using a continuous blue laser (P = 7 W, λ = 444.5 nm) for the first time. XRD, FE-SEM, EDX, and UV-Vis investigated the characteristics of the samples produced by the LACBS. ZnO: Ag(10%) submicron flowers are essential in rapid photodegradation under blue laser irradiation. The high surface area and catalytic activity of the prepared Ag-decorated ZnO are attributed to this improved photocatalytic activity. Using UV-visible spectroscopy, the photocatalytic efficiency was determined from the absorption spectra. The separation of photo-generated electron-hole pairs was facilitated, and the absorption edge of the hybrid submicron structures shifted into the visible spectrum region due to a combination of the Ag plasmonic effect and surface imperfections in ZnO. Effective visible light absorption was achieved via band-edge tuning, which increased the ZnO:Ag submicron structures’ ability to degrade dyes.

Original languageEnglish
Article number229
JournalCrystals
Volume13
Issue number2
DOIs
Publication statusPublished - Feb 2023

Keywords

  • LACBS
  • methylene blue
  • photocatalytic
  • pure and Ag-doped ZnO
  • submicron structures

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Inorganic Chemistry

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