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

doi:10.1016/j.tsf.2016.09.046

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

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

20 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 language	English
Pages (from-to)	655-661
Number of pages	7
Journal	Thin Solid Films
Volume	616
DOIs	https://doi.org/10.1016/j.tsf.2016.09.046
Publication status	Published - Oct 1 2016

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

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10.1016/j.tsf.2016.09.046

Cite this

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

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.",

keywords = "Aluminum, Anatase, Doped titanium dioxide, Microstructure, Photocatalytic degradation, Thin film",

author = "F. Bensouici and M. Bououdina and Dakhel, {A. A.} and T. Souier and R. Tala-Ighil and M. Toubane and A. Iratni and S. Liu and W. Cai",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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doi = "10.1016/j.tsf.2016.09.046",

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AU - Bensouici, F.

AU - Bououdina, M.

AU - Dakhel, A. A.

AU - Souier, T.

AU - Tala-Ighil, R.

AU - Toubane, M.

AU - Iratni, A.

AU - Liu, S.

AU - Cai, W.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

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