Catalytic amounts of glucose oxidase from Aspergillus Niger (GO) are active in the reduction of O2 to H2O2 in the presence of irradiated suspensions of TiO2 and isopropyl alcohol as electron donor. An explanation of this behavior is given on the basis of the ability of the enzyme to capture electrons from the photoexcited TiO2 instead of its natural substrate, glucose. This process has a marked positive effect on both the oxidation of isopropyl alcohol to acetone and the formation of radical intermediates, which have been detected, for the first time, by EPR-spin trapping investigation.

GLUCOSE OXIDASE CATLYSES THE REDUCTION OF O2 TO H2O2 IN THE PRESENCE OF IRRADIATED TiO2 AND ISOPROPYL ALCOHOL

MALDOTTI, Andrea;MOLINARI, Alessandra;
2002

Abstract

Catalytic amounts of glucose oxidase from Aspergillus Niger (GO) are active in the reduction of O2 to H2O2 in the presence of irradiated suspensions of TiO2 and isopropyl alcohol as electron donor. An explanation of this behavior is given on the basis of the ability of the enzyme to capture electrons from the photoexcited TiO2 instead of its natural substrate, glucose. This process has a marked positive effect on both the oxidation of isopropyl alcohol to acetone and the formation of radical intermediates, which have been detected, for the first time, by EPR-spin trapping investigation.
2002
M. L., Ganadu; L., Andreotti; I., Vitali; Maldotti, Andrea; Molinari, Alessandra; G. M., Mura
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/471076
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