Template-free preparation of TiO2 microspheres for the photocatalytic degradation of organic dyes

Mouza Al Ruqaishy, Faisal Al Marzouqi, Kezhen Qi, Shu yuan Liu, Sreejith Karthikeyan, Younghun Kim, Salma Mohamed Zahran Al-Kindy, Alex Tawanda Kuvarega, Rengaraj Selvaraj*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


TiO2 microspheres were successfully synthesised by simple solution phase method by using various amount of titanium butoxide as precursor. The prepared TiO2 were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance absorption spectra (UV-DRS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). XRD analysis revealed that the as-synthesized TiO2 microsphere poses an anatase phase. The photocatalytic degradation experiments were carried out with three different dyes, such as methylene blue, brilliant black, reactive red-120 for four hours under UV light irradiation. The results show that TiO2 morphology had great influence on photocatalytic degradation of organic dyes. The experimental results of dye mineralization indicated the concentration was reduced by a high portion of up to 99% within 4 hours. On the basis of various characterization of the photocatalysts, the reactions involved to explain the photocatalytic activity enhancement due to the concentration of titanium butoxide and morphology include a better separation of photogenerated charge carriers and improved oxygen reduction inducing a higher extent of degradation of aromatics.

Original languageEnglish
Pages (from-to)2283-2289
Number of pages7
JournalKorean Journal of Chemical Engineering
Issue number11
Publication statusPublished - Nov 1 2018


  • Hydrothermal
  • Organic Dye
  • Photocatalytic Activity
  • Template-free
  • TiO

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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