Korean Journal of Chemical Engineering

  • 제35권11호
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  • Pages.2283-2289
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  • 2018
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  • 0256-1115(pISSN)
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  • 1975-7220(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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DOI QR코드

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

  • Al Ruqaishy, Mouza (Department of Chemistry, College of Science, Sultan Qaboos University) ;
  • Al Marzouqi, Faisal (Department of Chemistry, College of Science, Sultan Qaboos University) ;
  • Qi, Kezhen (Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University) ;
  • Liu, Shu-yuan (Department of Pharmacology, Shenyang Medical College) ;
  • Karthikeyan, Sreejith (Department of Physics and Nanotechnology, SRM Research Institute, SRM University) ;
  • Kim, Younghun (Department of Chemical Engineering, Kwangwoon University) ;
  • Al-Kindy, Salma Mohamed Zahran (Department of Chemistry, College of Science, Sultan Qaboos University) ;
  • Kuvarega, Alex Tawanda (Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus) ;
  • Selvaraj, Rengaraj (Department of Chemistry, College of Science, Sultan Qaboos University)
  • 투고 : 2018.04.02
  • 심사 : 2018.07.18
  • 발행 : 2018.11.30
⟨ 이전 논문 다음 논문 ⟩

초록

$TiO_2$ microspheres were successfully synthesised by simple solution phase method by using various amount of titanium butoxide as precursor. The prepared $TiO_2$ 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 $TiO_2$ 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 $TiO_2$ 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.

키워드

과제정보

연구 과제 주관 기관 : SQU-UAEU

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