Application of a "Black body" like reactor for measurements of quantum yields of photochemical reactions in heterogeneous systems

被引：63

作者：

Emeline, AV ^{[1
]}

Zhang, X ^{[1
]}

Jin, M ^{[1
]}

Murakami, T ^{[1
]}

Fujishima, A ^{[1
]}

机构：

[1] Kanagawa Acad Sci & Technol, Takatsu Ku, Kanagawa, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 14期

关键词：

D O I：

10.1021/jp057115f

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：

We report for the first time an experimental application of the concept of a "black body" like reactor to measure quantum yields (Phi) of photochemical reactions in liquid-solid heterogeneous systems. A major advantag,e of this new method is its simplicity since the fractions of reflected and transmitted light are negligible due to reactor geometry and high optical density of the heterogeneous systems. The average quantum yield of a test reaction (phenol photodegradation) over TiO2 (Degussa P25) as determined by this method was 0.14, identical to the quantum yield measured earlier for this same reaction under similar conditions by Salinaro and Serpone [Pure Appl. Chem. 1999, 71, 303]. We also report the quantum yield of phenol photodegradation over N-doped TiO2 during photoexcitation at the fundamental absorption band (lambda = 365 nm; Phi = 0.12) and at the N-doping induced extrinsic absorption band (lambda = 436 nm; Phi = 0.08) of the photocatalyst.

引用

页码：7409 / 7413

页数：5

共 16 条

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