Fe(III)-5,10,15,20-tetrakis(pentafluorophenyl)porphine supported on pyridyl-functionalized, crosslinked poly(vinyl alcohol) as a biomimetic versatile-peroxidase-like catalyst

This paper describes the immobilization of the commercial synthetic tetrakis(pentafluorophenyl) porphine-iron(III) chloride on pyridyl-functionalized crosslinked poly(vinyl alcohol) and the catalytic activity of the adduct towards oxidation of selected organic substrates by hydrogen peroxide. The obtained adduct was characterized by UV/vis and IR spectroscopies. It showed a noticeable lignin-peroxidase-like catalytic activity; moreover a dramatic activity enhancement was observed in the presence of Mn2+ under certain experimental conditions, so the preparation could well be classified as a manganese-peroxidase-like catalyst leading to a transient Mn(III) species. Conversion yields for some aromatic compounds (bio)chemically related to lignin, kinetics and operational features of the adduct are also reported.

Graphical abstractA new heterogeneous redox-active catalyst, based on Fe(III)-5,10,15,20-tetrakis (pentafluorophenyl)porphine supported on pyridyl-functionalized, crosslinked poly(vinyl alcohol), was prepared and characterized with concern to its ability in promoting the oxidative degradation of a range of aromatic compounds, both in the presence and in the absence of added Mn2+. Conversion yields for some aromatic compounds (bio)chemically related to lignin, kinetics and operational features are reported.Figure optionsDownload full-size imageDownload high-quality image (18 K)Download as PowerPoint slide