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https://hdl.handle.net/10316/10490
Title: | Mechanism and Kinetics of the Photocatalyzed Oxidation of p-Phenylenediamines by Peroxydisulfate in the Presence of Tri-2,2'-bipyridylylruthenium(II) | Authors: | Nickel, Ulrich Chen, Yao-Hong Schneider, Siegfried Silva, Maria I. Burrows, Hugh D. Formosinho, Sebastião J. |
Issue Date: | Mar-1994 | Publisher: | American Chemical Society | Citation: | The Journal of Physical Chemistry. 98:11 (1994) 2883-2888 | Abstract: | The autocatalytic oxidation ofp-phenylenediamines with peroxydisulfate can be strongly enhanced by irradiation in the presence of tri-2,2’-bipyridylylruthenium(II). R~( b p y ) 3~a+ct s as photosensitizer and photocatalyst. First, R~( b p y ) 3~is+ fo rmed by quenching excited R~*(bpy)3~w+it h S 2 0 ~ ~ T- .h en the ruthenium(II1) complex oxidizesp-phenylenediamine. The resulting R~( b p y ) 3~ca+n start the cycle again. The photocatalytic oxidation of N,N-diethyl-p-phenylenediaminea s well as the dark reactions were studied with stopped-flow techniques. The mechanism of this complex reaction is discussed in detail. | URI: | https://hdl.handle.net/10316/10490 | DOI: | 10.1021/j100062a026 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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Mechanism and Kinetics of the Photocatalyzed Oxidation.pdf | 680.33 kB | Adobe PDF | View/Open |
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