Mechanism and Kinetics of the Photocatalyzed Oxidation of p-Phenylenediamines by Peroxydisulfate in the Presence of Tri-2, 2'-bipyridylylruthenium (II)

U Nickel, YH Chen, S Schneider, MI Silva…

文献索引：Nickel, Ulrich; Chen, Yao-Hong; Schneider, Siegfried; Silva, Maria I.; Burrows, Hugh D.; Formosinho, Sebastiao J. Journal of Physical Chemistry, 1994 , vol. 98, # 11 p. 2883 - 2888

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被引用次数: 31

摘要

The autocatalytic oxidation ofp-phenylenediamines with peroxydisulfate can be strongly enhanced by irradiation in the presence of tri-2, 2'-bipyridylylruthenium (II). R~(bpy) 3~+ acts as photosensitizer and photocatalyst. First, R~(bpy) 3~+ is formed by quenching excited R~*(bpy) 3~+ with S20~~-. Then the ruthenium (II1) complex oxidizesp-phenylenediamine. The resulting R~(bpy) 3~+ can start the cycle again. The photocatalytic oxidation of N, N- ...