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A critical review on the recent progress of synthesizing techniques and fabrication of TiO2-based nanotubes photocatalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
39884 45838 2014 16 PDF Available
Title
A critical review on the recent progress of synthesizing techniques and fabrication of TiO2-based nanotubes photocatalysts
Abstract

•TiO2 nanotubes photocatalyst for environmental application is reviewed.•Progress of three main approaches used to synthesize TiO2 nanotubes is summarized.•Influencing factors of hydrothermal synthesis are demonstrated.•Recent works on various modification methods on TiO2 nanotubes are discussed.•Catalyst enhancement through the modifications of TiO2 nanotubes is highlighted.

One-dimensional titanium dioxide (TiO2)-based nanotubes have attracted great interest to be used as photocatalysts in the field of environmental applications. Three main approaches via template-assisted, electrochemical anodic oxidation and alkaline hydrothermal treatment used to prepare the nanostructured TiO2-based nanotubes are reviewed. The parameters that affect the formation of TiO2-based nanotubes via hydrothermal method such as phases and particle sizes of starting materials, types and concentrations of alkaline solution, temperature and duration of hydrothermal treatment, ultrasonication- and microwave-assisted hydrothermal synthesis, acid washing and calcination have been reviewed in details. This paper also discussed the possible crystal structure and formation mechanism of TiO2-based nanotubes via alkaline hydrothermal treatment. In addition, the recent research progress on the structural modification of TiO2-based nanotubes to be used as photocatalysts is summarized in this review. Modification strategies investigated include metal nanoparticles deposition, single- and co-doping of metal ions/non-metal ions, coupled with other semiconductors to form binary composites and hybrid with carbon nanomaterials.

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Keywords
TiO2 nanotubes; Photocatalyst; Hydrothermal synthesis; Mechanism; Modifications
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A critical review on the recent progress of synthesizing techniques and fabrication of TiO2-based nanotubes photocatalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 481, 5 July 2014, Pages 127–142
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Full-text PDF Download
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