Pulsed laser ablation induced enhancement of TiO/sub 2/ photocatalytic effect

Author

Takahashi, Koichi ; Obara, M.

Author_Institution

Dept. of Electron. & Electr. Eng., Keio Univ., Yokohama, Japan

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. In recent years, there has been a growing interest in the use of photocatalyst. TiO/sub 2/ is a most attractive because of its stability to acid, base and organic solvent. It is used to purify organic pollutants in water and air, in order to clean cigarette´s tar, and to sterilize bacteria. This study may enhance the photocatalytic effect due to the increase of surface area and the decrease of light reflection. We drilled microholes densely on the bulk TiO/sub 2/ (rutile[100] surface) by femtosecond Ti:sapphire laser, whose wavelength is 780 nm.

Keywords

catalysis; laser beam machining; micromachining; pulsed laser deposition; titanium compounds; 780 nm; TiO/sub 2/; TiO/sub 2/ photocatalytic effect; bacteria; cigarette tar; femtosecond Ti:sapphire laser; light reflection; microhole drilling; organic pollutants purification; photocatalyst; photocatalytic effect; pulsed laser ablation; rutile[100] surface; stability; surface area; Air pollution; Laser ablation; Microorganisms; Optical pulses; Optical reflection; Solvents; Stability; Surface cleaning; Surface contamination; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.910061

Filename

910061