Photocatalytic degradation of organic dye using titanium dioxide modified with metal and non-metal deposition

Muhammad Anas, Dong Suk Han, Khaled Mahmoud, Hyunwoong Park, Ahmed Abdel-Wahab

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this study, photocatalytic degradation of methyl orange (MO) as an example of organic dye was investigated using different wt% Pd-loaded and N-doped P-25 titanium dioxide (TiO<inf>2</inf>) nanoparticles, as example of metal and nonmetal-doped TiO<inf>2</inf>, respectively. The Pd-loaded and N-doped TiO<inf>2</inf> photocatalysts were prepared by post-incorporation method using K<inf>2</inf>PdCl<inf>4</inf> and urea, respectively, as precursors. A variety of surface analysis techniques were used for characterization of surface and functional group while using ultraviolet/visible (UV-vis) analysis for monitoring photocatalytic degradation of MO. Kinetic parameters were obtained using Langmuir-Hinshelwood model to determine the degradation rate constants. It was found that the metal-loaded titanium dioxide degraded MO in water at a higher rate than did non-metal-loaded titanium dioxide fabricated by using the post-synthesis method. Also, the pure P25-TiO<inf>2</inf> degraded MO more than N-doped TiO<inf>2</inf> because of decreased surface area by particle agglomeration after being made by the post-incorporation method.

Original languageEnglish
Article number2998
Pages (from-to)209-218
Number of pages10
JournalMaterials Science in Semiconductor Processing
Volume41
DOIs
Publication statusPublished - 27 Aug 2015

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Keywords

  • Langmuir-Hinshelwood kinetics
  • Methyl orange
  • Nitrogen
  • Palladium
  • Titanium dioxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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