10.57647/j.ijc.2025.1503.26

Photoreduction deposition and characterization of heterostructure Pt/ZnO nanocomposites used for UV-light-driven photocatalysis

  1. Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
  2. Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
  3. Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
  4. Advanced Scientific Instruments Unit, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
  5. Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
  6. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
  7. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
Photoreduction deposition and characterization of heterostructure Pt/ZnO nanocomposites used for UV-light-driven photocatalysis

Received: 2025-01-27

Revised: 2025-04-21

Accepted: 2025-05-05

Published in Issue 2025-09-30

Published Online: 2025-05-13

How to Cite

Phuruangrat, A., Chimupala, Y., Somdee, A., Kuntalue, B., Thongtem, T., & Thongtem, S. (2025). Photoreduction deposition and characterization of heterostructure Pt/ZnO nanocomposites used for UV-light-driven photocatalysis. Iranian Journal of Catalysis, 15(3 (September 2025). https://doi.org/10.57647/j.ijc.2025.1503.26

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Abstract

0.5%, 1.0%, and 3.0% Pt/ZnO nanocomposites synthesized by the photoreduction deposition method were used for studying UV-light-driven photodegradation of methylene blue (MB). Phase and composition of heterostructure 3.0% Pt/ZnO nanocomposites were indexed to a hexagonal ZnO phase doped with face-centered cubic (FCC) Pt structure characterized by XRD. According to FTIR and Raman analyses of Pt/ZnO nanocomposites, the vibration of ZnO was influenced by the strong interaction of metallic Pt nanoparticles. SEM images of heterostructure Pt/ZnO nanocomposites show that they were composed of flower-like ZnO structures with spherical Pt nanoparticles decorated on the surface of nanoplate petals. The photocatalytic performance of the as-prepared samples was evaluated by deleting methylene blue (MB) as a toxic dye model under UV light irradiation. The loaded Pt nanoparticles played the role in preventing the recombination of photo-excited electrons and photo-induced holes and enhancing the photocatalytic reaction of ZnO. In this research, 0.5% Pt/ZnO nanocomposites were the best UV-light-driven photocatalyst with % degradation efficiency of 97.37% within 180 min and with O2 and h+ as main active species.

Research Highlights

  • Pt/ZnO nanocomposites are UV-light-driven photocatalyst.
  • They were successfully prepared by photoreduction deposition method.
  • The promising material used for wastewater treatment.

Keywords

  • Main active radicals,
  • Pt/ZnO nanocomposites,
  • Scavenger agents,
  • UV-light-driven photocatalyst

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