Photoinduced charge separation in titania nanotubes

被引：112

作者：

Tachikawa, Takashi ^{[1
]}

Tojo, Sachiko ^{[1
]}

Fujitsuka, Mamoru ^{[1
]}

Sekino, Toru ^{[1
]}

Majima, Tetsuro ^{[1
]}

机构：

[1] Osaka Univ, SANKEN, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 29期

关键词：

D O I：

10.1021/jp063800q

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：

The photocatalytic one-electron oxidation reaction of an aromatic compound during UV light irradiation of titania nanotubes and nanoparticles was investigated using time-resolved diffuse reflectance spectroscopy. Remarkably long-lived radical cations of the aromatic compound and trapped electrons were observed for the nanotubes when compared to those for nanoparticles. The influences of the morphology on the one-electron oxidation process of an aromatic compound adsorbed on the surface were discussed in terms of the charge recombination dynamics between the radical cation and electrons in TiO2.

引用

页码：14055 / 14059

页数：5

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