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Nanoparticles of ZnS doped with iron as photocatalyst under UV and sunlight irradiation

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Published/Copyright: May 31, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 8

Abstract

Nanoparticles of zinc sulfide doped with iron were synthesized by controlled co-precipitation and used as a photocatalyst in the photodegradation of congo red as color pollutant. The photoreactivity of doped zinc sulfide was studied with varying mole fraction of Fe3+ to zinc ion, pH of solution, dosage of photocatalyst and concentration of dye. The characterization of nanoparticles was done using ultraviolet– visible spectra, X-ray diffraction pattern and scanning electron microscopy and transmission electron microscopy images. The size range of nanoparticles was determined to be 10–40 nm. In the presence of 0.8 g/L of ZnS:Fe (0.5%) nanophotocatalyst, 12.0 mg/L of congo red and pH 6, the degradation efficiency was 92% under UV and 98% under sunlight irradiations in the time of 120 min and 12 h, respectively. The pseudo-first order rate constant kinetic was obtained 2.12 × 10−2 min−1 and 2.9 × 10−2 h−1 under UV and sunlight irradiation. The reproducibility of photoreactivity of the proposed photocatalyst was 92–90%degradation in four cycles of photodegradation.

Keywords: Zinc sulfide; Nanoparticles; Photocatalyst; Semiconductor
* Correspondence address: H. R. Pouretedal, Faculty of science, Malek-ashtsr University of Technology, Shahin-shahr, Iran, Tel.: +98312 5220520, Fax: +98312 5220420. E-mail:

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Received: 2009-2-15
Accepted: 2010-5-28
Published Online: 2013-05-31
Published in Print: 2010-08-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110371
Keywords for this article
Zinc sulfide; Nanoparticles; Photocatalyst; Semiconductor

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Simulation of the co-sintering of composite structures
  7. Thermomechanical fatigue of 1.4849 cast steel – experiments and life prediction using a fracture mechanics approach
  8. Finite element modelling of coverage effects during shot peening of IN718
  9. Damage modelling for simulation of process chain from forming to crash
  10. Thermomechanical representation of the stored energy during plastic deformation
  11. Molecular dynamics simulation of gold solid film lubrication
  12. Modelling the effect of hydrogen on ductile tearing resistance of steels
  13. Modeling of formation of precipitate-free zone
  14. Applied
  15. Temperature dependence of the plastic flow of high-purity tungsten single crystals
  16. Nanoindentation studies on crosslinking and curing effects of PDMS
  17. Absorption and spectroscopic ellipsometry study of electron irradiated magnesium aluminate spinel
  18. Effect of deformation routes on the evolution of strain states and texture during asymmetrical cold rolling and subsequent annealing in interstitial-free steel
  19. Silica surface modified by aliphatic amines as effective copper complexing agents
  20. In-situ synthesis of Y2W3O12 within a Co-based superalloy powder mixture
  21. Nanoparticles of ZnS doped with iron as photocatalyst under UV and sunlight irradiation
  22. Durability of heavyweight concrete containing barite
  23. DGM News
  24. DGM News
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