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Issue 4, 2003
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Highly porous TiO2/Al2O3 composite nanostructures on glass by anodization and the sol–gel process: fabrication and photocatalytic characteristics

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Abstract

Three-dimensional highly porous TiO2(–4%SiO2–1%TeO2)/Al2O3 composite nanostructures directly fixed on glass substrates are fabricated by anodization of a superimposed Al/Ti layer sputter-deposited on glass and a sol–gel process. The porous composite nanostructures (Ø 30–120 nm), with a surface layer containing anatase TiO2 with a preferential {004} reflection, possess large surface areas and exhibit an enhanced photocatalytic performance. In particular, the porous TiO2–4%SiO2–1%TeO2/Al2O3 composite nanostructure with Ø ∼ 120 nm pores shows the highest photocatalytic activity (quantum yield) and is 6 times higher than the commercial Degussa P-25 TiO2 powder under the experimental conditions.

Graphical abstract: Highly porous TiO2/Al2O3 composite nanostructures on glass by anodization and the sol–gel process: fabrication and photocatalytic characteristics

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Publication details

The article was received on 20 Nov 2002, accepted on 10 Jan 2003 and first published on 07 Feb 2003


Article type: Paper
DOI: 10.1039/B211492E
Citation: J. Mater. Chem., 2003,13, 866-870
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    Highly porous TiO2/Al2O3 composite nanostructures on glass by anodization and the sol–gel process: fabrication and photocatalytic characteristics

    S. Chu, S. Inoue, K. Wada, D. Li and H. Haneda, J. Mater. Chem., 2003, 13, 866
    DOI: 10.1039/B211492E

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