Removal of RR198 dye by TiO2/Fe3O4/persulfate nanoparticles under UV-LED irradiation and comparision of OFAT and CCD experimental design in RSM modelling

Farzaneh Mohammadi, Zeinab Yavari, Somayeh Rahimi

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2 Citations (Scopus)


The photocatalytic activity of TiO2/Fe3O4 nanocomposite has been determined. The XRD spectrum and FESEM analysis have been used to evaluate TiO2 / Fe3O4 nanoparticles. The photocatalytic activity of nanoparticles is assessed by degradation of the RR198 solution under the influence of UV-LED radiation. Response Surface Methodology (RSM) is employed to determine the relationships between the studied parameters. The experiments were designed and performed in two ways: One-factor-at-a-time method (OFAT) and Central composite design (CCD). Here nanoparticles with synergistic 2-effect of S2O8 were very successful in eliminating the dye. The results of the RSM model with the two mentioned experiment design methods indicated that the model derived from the CCD method had a better predictive capability and favoured from the ability to generalize to other results rather than OFAT method.

Original languageEnglish
Pages (from-to)283-293
Number of pages11
JournalIndian Journal of Chemical Technology
Issue number4
Publication statusPublished - 2020


  • Dye removal
  • Nanocomposite
  • Photocatalyst
  • RR198 dye
  • RSM
  • TiO/FeO

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Chemistry

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