Visible light photocatalytic activity of Fe3+-doped ZnO nanoparticle prepared via sol-gel technique

Muneer M. Ba-Abbad, Abdul Amir H. Kadhum, Abu Bakar Mohamad, Mohd Sobri Takriff, Kamaruzzaman Sopian

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

The optical properties of a ZnO photocatalyst were enhanced with various dopant concentrations of Fe3+. Doped ZnO nanoparticles were synthesized via a sol-gel method without the use of capping agents or surfactants and was then characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet-visible (UV-Vis) spectroscopy. The results showed that ZnO has a wurtzite, hexagonal structure and that the Fe3+ ions were well incorporated into the ZnO crystal lattice. As the Fe3+ concentration increased from 0.25wt.% to 1wt.%, the crystal size decreased in comparison with the undoped ZnO. The spectral absorption shifts of the visible light region (red shift) and the band gap decreases for each Fe-ZnO sample were investigated. The photocatalytic activities of the ZnO and Fe-ZnO samples were evaluated based on the degradation of 2-chlorophenol in aqueous solution under solar radiation. The samples with a small concentration of Fe3+ ions showed enhanced photocatalytic activity with an optimal maximum performance at 0.5wt.%. The results indicated that toxicity removal of 2-chlorophenol at same line of degradation efficiency. Small crystallite size and low band gap were attributed to high activities of Fe-ZnO samples under various concentrations of Fe3+ ions compared to undoped ZnO.

Original languageEnglish
Pages (from-to)1604-1611
Number of pages8
JournalChemosphere
Volume91
Issue number11
DOIs
Publication statusPublished - Jun 2013

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Polymethyl Methacrylate
Nanoparticles
Sol-gels
gel
Gels
chlorophenol
Ions
Light
ion
Energy gap
crystal
Degradation
degradation
capping
Ultraviolet visible spectroscopy
Crystallite size
Photocatalysts
Solar radiation
Transmission Electron Microscopy
Surface-Active Agents

Keywords

  • Fe-doped ZnO
  • Nanoparticle
  • Photocatalytic activity
  • Sol-gel
  • Toxicity

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemistry(all)

Cite this

Visible light photocatalytic activity of Fe3+-doped ZnO nanoparticle prepared via sol-gel technique. / Ba-Abbad, Muneer M.; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar; Takriff, Mohd Sobri; Sopian, Kamaruzzaman.

In: Chemosphere, Vol. 91, No. 11, 06.2013, p. 1604-1611.

Research output: Contribution to journalArticle

Ba-Abbad, Muneer M. ; Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar ; Takriff, Mohd Sobri ; Sopian, Kamaruzzaman. / Visible light photocatalytic activity of Fe3+-doped ZnO nanoparticle prepared via sol-gel technique. In: Chemosphere. 2013 ; Vol. 91, No. 11. pp. 1604-1611.
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