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

[31] Pulsed laser photolysis vacuum UV laser-induced fluorescence kinetic study of the gas-phase reactions of Cl(2P3/2) atoms with C3-C6 ketones (vol 111, pg 1271, 2007)
Takahashi, Kenshi
Iwasaki, Erika
Matsumi, Yutaka
Wallington, Timothy J.
JOURNAL OF PHYSICAL CHEMISTRY A, 2007, 111 (32): : 8044 - 8045
[32] Reporting the sensitivity of laser-induced fluorescence instruments used for HO2 detection to an interference from RO2 radicals and introducing a novel approach that enables HO2 and certain RO2 types to be selectively measured
Whalley, L. K.
Blitz, M. A.
Desservettaz, M.
Seakins, P. W.
Heard, D. E.
ATMOSPHERIC MEASUREMENT TECHNIQUES, 2013, 6 (12) : 3425 - 3440

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