Benz[a]anthracene heterogeneous photochemical reaction on the surface of TiO2 particles

被引：5

作者：

Shen Jian-Dong ^{[1
]}

Zhang Shi-Cheng ^{[1
]}

Lian Jin-Jun ^{[1
]}

Kong Ling-Dong ^{[1
]}

Chen Jian-Min ^{[1
]}

机构：

[1] Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2007年 / 23卷 / 10期

基金：

中国国家自然科学基金;

关键词：

benz[a]anthracene; TiO2; photochemical reaction; DRIFTS;

D O I：

10.1016/S1872-1508(07)60078-3

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 photochemical reaction of benz[a]anthracene (B[a]A) on TiO2 particles was investigated by using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and gas chromatography-mass spectrometry (GC-MS). It was confirmed that photocatalytic oxidation of benz [a] anthracene occured on the surface of TiO2 particles, and surface hydroxyl and surface oxygen participated in the reactions. The main photochemical product of benz[a] anthracene was benz[a]anthracene-7,12-dione. Possible photochemical mechanism of benz[a]anthracene was also proposed. Under the simulated sunlight irradiation (22 mW center dot cm(-2)), the process of benz [a]anthracene photodegration on TiO2 particles matched the exponential decay equation, and the half-life time was 6.8 min.

引用

页码：1531 / 1536

页数：6

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