Direct detection of OH radicals diffused to the gas phase from the UV-irradiated photocatalytic TiO2 surfaces by means of laser-induced fluorescence spectroscopy

被引：88

作者：

Murakami, Yoshinori ^{[1
]}

Kenji, Endo ^{[1
]}

Nosaka, Atsuko Y. ^{[1
]}

Nosaka, Yoshio ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Chem, Nagaoka, Niigata 9402188, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 34期

关键词：

D O I：

10.1021/jp063293c

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 important roles of OH radicals for remote oxidation using TiO2 photocatalysts were evidenced by the in situ detection of OH radicals in the gas phase using the laser-induced fluorescence (LIF) technique. The appearance of OD-LIF intensities after the exposure of D2O vapors over TiO2 powders and the decrease of the time-resolved signals of OH-LIF intensities with increasing calcined temperatures of TiO2 powders suggested that the exchangeable water at the TiO2 surface is the origin of the diffused OH radicals.

引用

页码：16808 / 16811

页数：4

共 32 条

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