Highly porous (TiO2-SiO2-TeO2)/Al2O3/TiO2 composite nanostructures on glass with enhanced photocatalysis fabricated by anodization and sol-gel process

被引：130

作者：

Chu, SZ ^{[1
]}

Inoue, S ^{[1
]}

Wada, K ^{[1
]}

Li, D ^{[1
]}

Haneda, H ^{[1
]}

Awatsu, S ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 27期

关键词：

D O I：

10.1021/jp0349684

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three-dimensional highly porous TiO2-4%SiO2-1%TeO2/Al2O3/TiO2 composite nanostructures (phi30-120 nm) directly fixed on glass substrates were fabricated by anodization of a superimposed Al/Ti layer sputter-deposited on glass and a sol-gel process. The porous composite nanostructures exhibited enhanced photocatalytic performances in decomposing acetaldehyde gas under UV illumination, which can be mainly ascribed to the combination of their large surface areas (7750-14770 m(2)/m(2)), high porosities (34.2-45.6%), and transparency. Specially, the composite nanostructure with similar tophi120 nni pores calcined at 500 degreesC showed the highest photocatalytic activity that is 6-10 times higher than commercial P-25 TiO2 under the experimental conditions.

引用

页码：6586 / 6589

页数：4

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