Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers

F. Bensouici, M. Bououdina, A. A. Dakhel, T. Souier, R. Tala-Ighil, M. Toubane, A. Iratni, S. Liu, W. Cai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, Al-doped TiO2 films are deposited by sol-gel dip-coating method. Structure, surface morphology, optical properties and photocatalytic degradation of Methylene blue have been investigated. The films are characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), UV–Visible spectroscopy and scanning electron microscope (SEM) equipped with electron dispersive X-ray (EDX). XRD analysis confirms the formation of single nanocrystalline anatase phase. The crystallite size is in the order of 17 nm and seems not affected by the presence of Al. AFM analysis reveals that the surface topography of TiO2:Al films is significantly affected by Al content. The optical properties are found not affected and all TiO2:Al thin films show high visible infrared transmission and high optical gap energy. The phocatalytic efficiency has been improved by Al doping; with the highest degradation rate of methylene blue observed for TiO2:0.2% Al.

Original languageEnglish
Pages (from-to)655-661
Number of pages7
JournalThin Solid Films
Volume616
DOIs
Publication statusPublished - Oct 1 2016

Fingerprint

Methylene Blue
Doping (additives)
methylene blue
Atomic force microscopy
Optical properties
atomic force microscopy
degradation
optical properties
Degradation
Infrared transmission
x rays
Surface topography
Crystallite size
diffraction
anatase
Titanium dioxide
X ray diffraction analysis
Sol-gels
Surface morphology
coating

Keywords

  • Aluminum
  • Anatase
  • Doped titanium dioxide
  • Microstructure
  • Photocatalytic degradation
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Bensouici, F., Bououdina, M., Dakhel, A. A., Souier, T., Tala-Ighil, R., Toubane, M., ... Cai, W. (2016). Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers. Thin Solid Films, 616, 655-661. https://doi.org/10.1016/j.tsf.2016.09.046

Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers. / Bensouici, F.; Bououdina, M.; Dakhel, A. A.; Souier, T.; Tala-Ighil, R.; Toubane, M.; Iratni, A.; Liu, S.; Cai, W.

In: Thin Solid Films, Vol. 616, 01.10.2016, p. 655-661.

Research output: Contribution to journalArticle

Bensouici, F, Bououdina, M, Dakhel, AA, Souier, T, Tala-Ighil, R, Toubane, M, Iratni, A, Liu, S & Cai, W 2016, 'Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers', Thin Solid Films, vol. 616, pp. 655-661. https://doi.org/10.1016/j.tsf.2016.09.046
Bensouici, F. ; Bououdina, M. ; Dakhel, A. A. ; Souier, T. ; Tala-Ighil, R. ; Toubane, M. ; Iratni, A. ; Liu, S. ; Cai, W. / Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers. In: Thin Solid Films. 2016 ; Vol. 616. pp. 655-661.
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