Highly Visible Photocatalytic Activity of Fluorine and Nitrogen Co-doped Nanocrystalline Anatase Phase Titanium Oxide Converted From Ammonium Oxotrifluorotitanate

Author

Lee, Ming-Kwei ; Shih, Tsung-Hsiang ; Shih, Chung-Min

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung

Volume

6

Issue

3

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

316

Lastpage

319

Abstract

The formation of high-quality fluorine and nitrogen co-doped nanocrystalline anatase phase titanium oxide converted from ammonium oxotrifluorotitanate discoid crystal by means of thermal treatment is reported in this study. The decomposition rate of methylene blue under 450 nm light-emitting diode illumination demonstrates an excellent visible photocatalytic activity. The highest visible photocatalytic activity is obtained at the thermal treatment temperature of 600 degC. We confirm the positive roles of fluorine and nitrogen in titanium oxide in the area of visible photocatalytic activity. There is one-to-one correspondence between the life of an electron and hole pair and photocatalytic activity

Keywords

catalysts; decomposition; fluorine; heat treatment; nanostructured materials; nanotechnology; nitrogen; photochemistry; semiconductor materials; titanium compounds; 450 nm; 600 C; TiO₂:F; TiO₂:N; ammonium oxotrifluorotitanate discoid crystal; anatase phase titanium oxide; decomposition rate; electron pair; fluorine codoped nanocrystalline; hole pair; light-emitting diode; nitrogen codoped nanocrystalline; thermal treatment; visible photocatalytic activity; Charge carrier processes; Doping; Glass; Nitrogen; Photonic band gap; Solar energy; Spectroscopy; Temperature; Titanium; X-ray scattering; F and N co-doped ${hbox{TiO}}_{2}$ ; life of an electron and hole pair; photocatalysis;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2007.894836

Filename

4200734