Design and fabrication of a TiO2/nano-silicon composite visible light photocatalyst

被引：25

作者：

Lin, Chun Yu

Fang, Yean Kuen ^{[1
]}

Kuo, Che Hao

Chen, Shih Fang

Lin, Chun-Sheng

Chou, Tse Heng

Lee, Yu-Hua

Lin, Jui-Che

Hwang, Sheng-Beng

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, VLSI Technol Lab, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[3] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan

来源：

APPLIED SURFACE SCIENCE | 2006年 / 253卷 / 02期

关键词：

nano-silicon; TiO2; photocatalyst; methylene blue; super-hydrophilic;

D O I：

10.1016/j.apsusc.2006.01.030

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：

Nano-silicon (nc-Si) was utilized as the charges generator to promote the photocatalytic and super-hydrophilic reactivity of TiO2 film under visible light irradiation. The photocatalytic ability of TiO2/nc-Si composite photocatalyst was evaluated by a set of experiments to photodecompose 100 ppm methylene blue (MB) in aqueous solution. And the super-hydrophilic property was characterized by measuring the water droplet contacts angle, under visible light irradiation in atmospheric air and at room temperature. Under 100 mW/cm(2) visible light irradiation, the droplet contact angles were reduced to 0 degrees within 4 h with nc-Si charge generator. Additionally, the rate constant of MB photo-degradation was promoted 6.6 times. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：898 / 903

页数：6

共 25 条

[1] Amorphous and microcrystalline silicon films grown at low temperatures by radio-frequency and hot-wire chemical vapor deposition [J].