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Abstract:

A bimetallic porphyrin film was studied as electrode modifier with catalytic activity for molecular oxygen reduction and hydrogen peroxide reduction. Molecular oxygen reduction is catalyzed by both polyFePPIX or polyCuPPIX. Peroxidase activity at-200 mV versus Ag/AgCl is only performed by polyFePPIX in absence of oxidative agents, and the deposit polyCuPPIX is required to perform peroxidase activity in the presence of oxygen. Copper substitution by other metals in the porphyrin was not effective. It has been found that metalloporphyrin immobilization order acquire particular relevance. However, the mass of porphyrin deposit is always 1.5-1.6 μg of polyFePPIX and 7.3-9.1 μg of polyCuPPIX, indicating that polymer growth rate is not affected by immobilization order. polyCuPPIX deposited on polyFePPIX preserves catalytic properties over a wide pH range, and acts as a molecular sieve. The use of this bimetallic electrode in a first-generation oxidase biosensors is discussed. © 2003 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:New bimetallic porphyrin film: An electrocatalytic transducer for hydrogen peroxide reduction, applicable to first-generation oxidase-based biosensors
Autor:Vago, J.M.; Dall'Orto, V.C.; Forzani, E.; Hurst, J.; Rezzano, I.N.
Filiación:Depto. de Química Analtica, Fac. de Farmacia/Bioquímica, Universidad de Buenos Aires, Junín 956, CP 1113 Buenos Aires, Argentina
INQUIMAE, Depto. de Quim. Inorg., Ciudad Universitaria, Pabellón 2, CP 1428 Buenos Aires, Argentina
Palabras clave:Bimetallic film; Catalyst; Electropolymerization; Hydrogen peroxide; Catalyst activity; Electropolymerization; Enzyme sensors; Hydrogen peroxide; Oxygen; Porphyrins; Reduction; Transducers; Electrocatalytic transducers; Bimetals
Año:2003
Volumen:96
Número:1-2
Página de inicio:407
Página de fin:412
DOI: http://dx.doi.org/10.1016/S0925-4005(03)00575-6
Título revista:Sensors and Actuators, B: Chemical
Título revista abreviado:Sens Actuators, B Chem
ISSN:09254005
CODEN:SABCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09254005_v96_n1-2_p407_Vago

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Citas:

---------- APA ----------
Vago, J.M., Dall'Orto, V.C., Forzani, E., Hurst, J. & Rezzano, I.N. (2003) . New bimetallic porphyrin film: An electrocatalytic transducer for hydrogen peroxide reduction, applicable to first-generation oxidase-based biosensors. Sensors and Actuators, B: Chemical, 96(1-2), 407-412.
http://dx.doi.org/10.1016/S0925-4005(03)00575-6
---------- CHICAGO ----------
Vago, J.M., Dall'Orto, V.C., Forzani, E., Hurst, J., Rezzano, I.N. "New bimetallic porphyrin film: An electrocatalytic transducer for hydrogen peroxide reduction, applicable to first-generation oxidase-based biosensors" . Sensors and Actuators, B: Chemical 96, no. 1-2 (2003) : 407-412.
http://dx.doi.org/10.1016/S0925-4005(03)00575-6
---------- MLA ----------
Vago, J.M., Dall'Orto, V.C., Forzani, E., Hurst, J., Rezzano, I.N. "New bimetallic porphyrin film: An electrocatalytic transducer for hydrogen peroxide reduction, applicable to first-generation oxidase-based biosensors" . Sensors and Actuators, B: Chemical, vol. 96, no. 1-2, 2003, pp. 407-412.
http://dx.doi.org/10.1016/S0925-4005(03)00575-6
---------- VANCOUVER ----------
Vago, J.M., Dall'Orto, V.C., Forzani, E., Hurst, J., Rezzano, I.N. New bimetallic porphyrin film: An electrocatalytic transducer for hydrogen peroxide reduction, applicable to first-generation oxidase-based biosensors. Sens Actuators, B Chem. 2003;96(1-2):407-412.
http://dx.doi.org/10.1016/S0925-4005(03)00575-6