Collect. Czech. Chem. Commun.
1987, 52, 2451-2456
https://doi.org/10.1135/cccc19872451
Comparison of photocatalytic activities of 3d transition metal ions for hydrogen peroxide photolysis and photoinitiated hydroxylation of 2-hydroxybenzoic acid
Petr Sedlák, Stanislav Luňák and Pavel Lederer
Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 160 00 Prague 6
Abstract
Quantum yields of hydrogen peroxide photolysis and photoinitiated hydroxylation of 2-hydroxybenzoic acid in the presence of 3d transition metal ions have been measured. Marked photocatalytic effects were only observed for Cu(II) in hydrogen peroxide photolysis, and for Fe(III) in photoinitiated hydroxylation of 2-hydroxybenzoic acid. No photocatalytic activity was detected for the other 3d transition metal ions investigated. Fe(III) and Cu(II) differ in their photocatalytic activities, suggesting that the simple concept of free OH. radical formation cannot explain the mechanisms of their action.
