One-electron oxidation of aromatic sulfides adsorbed on the surface of TiO2 particles studied by time-resolved diffuse reflectance spectroscopy

被引：27

作者：

Tachikawa, T ^{[1
]}

Tojo, S ^{[1
]}

Fujitsuka, M ^{[1
]}

Majima, T ^{[1
]}

机构：

[1] Osaka Univ, SANKEN, Ibaraki, Osaka 5650047, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 382卷 / 5-6期

关键词：

D O I：

10.1016/j.cplett.2003.10.110

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：

One-electron oxidation of 4-methyl-p-tolylsulfide (NITS) and 4-methylthiophenylmethanol (MTPM) adsorbed on the surface of TiO2 powder slurried in acetonitrile has been investigated by the time-resolved diffuse reflectance spectroscopy. Relatively high concentration of the adsorbed MTPM determined by UV absorption spectral measurements clearly indicates that the -OH group of MTPM plays an important role in adsorbing on the surface of TiO2 particles. The initial concentration of the radical cations of substrates generated from one-electron oxidation with valence band holes or trapped hydroxyl radical significantly depended on the substrate concentration adsorbed on the TiO2 surface. (C) 2003 Elsevier B.V. All rights reserved.

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页码：618 / 625

页数：8

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