期刊
CHEMICAL PHYSICS LETTERS
卷 384, 期 4-6, 页码 312-316出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2003.11.109
关键词
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The pulse radiolysis technique has been used to elucidate the oxidation reaction of aromatic sulfides by hydroxyl radicals on the TiO2 nanoparticles in pH 2 aqueous solution. The hydroxyl radicals generated during the pulse radiolysis of the colloidal TiO2 aqueous solution were strongly adsorbed on the TiO2 particles with an apparent association constant (K-app) of similar to10(6) M-1. The hydroxyl radicals trapped on the TiO2 surface exhibit the absorption spectrum with a maximum peak at 370 nm. In order to clear the oxidative ability of this species, the oxidation processes of 4-methylthiophenylmethanol (MTPM) and 2-phenylthioethanol (PTE) in the colloidal TiO2 aqueous solution have been examined based on the kinetic analysis of the transient absorption. (C) 2003 Elsevier B.V. All rights reserved.
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