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 al-kindy, Alex Tawanda Kuvarega, Rengaraj Selvaraj

Research output: Contribution to journalArticle

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Abstract

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
Volume35
Issue number11
DOIs
Publication statusPublished - Nov 1 2018

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Microspheres
Coloring Agents
Dyes
Titanium
Degradation
Methylene Blue
Photocatalysts
Charge carriers
Ultraviolet radiation
Titanium dioxide
X ray diffraction analysis
Absorption spectra
X ray photoelectron spectroscopy
Irradiation
Oxygen
X ray diffraction
Scanning electron microscopy
Experiments

Keywords

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

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Template-free preparation of TiO2 microspheres for the photocatalytic degradation of organic dyes. / Al Ruqaishy, Mouza; Al Marzouqi, Faisal; Qi, Kezhen; Liu, Shu yuan; Karthikeyan, Sreejith; Kim, Younghun; al-kindy, salma; Kuvarega, Alex Tawanda; Selvaraj, Rengaraj.

In: Korean Journal of Chemical Engineering, Vol. 35, No. 11, 01.11.2018, p. 2283-2289.

Research output: Contribution to journalArticle

Al Ruqaishy, Mouza ; Al Marzouqi, Faisal ; Qi, Kezhen ; Liu, Shu yuan ; Karthikeyan, Sreejith ; Kim, Younghun ; al-kindy, salma ; Kuvarega, Alex Tawanda ; Selvaraj, Rengaraj. / Template-free preparation of TiO2 microspheres for the photocatalytic degradation of organic dyes. In: Korean Journal of Chemical Engineering. 2018 ; Vol. 35, No. 11. pp. 2283-2289.
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