RT Journal Article
T1 Graphene–polyamidoamine dendrimer–Pt nanoparticles hybrid nanomaterial for the preparation of mediatorless enzyme biosensor
A1 Araque, Elena
A1 Arenas, Cristian
A1 Gamella Carballo, María
A1 Reviejo García, Ángel Julio
A1 Villalonga Santana, Reynaldo
A1 Pingarrón Carrazón, José Manuel
AB A novel inorganic-organic hybrid nanomaterial was prepared by anchoring (3-glycidyloxypropyl)trimethoxysilane at the surface of graphene oxide, further cross-linking with polyamidoamine G-4 dendrimer, and final decoration with platinum nanoparticles. A glassy carbon electrode was coated with this hybrid nanomaterial and then used as support for the covalent immobilization of glucose oxidase. This enzyme electrode was employed to construct a mediatorless glucose amperometric biosensor. The resulting biosensor exhibited good electrocatalytical activity for the oxidation of the H2O2 produced by the enzyme catalyzed reaction, being able to detect glucose when poised at +400 mV. The biosensor showed a wide linear response to glucose ranging from 10 μM to 8.1 mM, high sensitivity of 24.6 mA/M cm2 and low detection limit of 0.8 μM. The biosensor was successfully tested for the quantification of glucose in samples of commercial soft drinks. © 2014 Elsevier B.V. All rights reserved.
PB Elsevier
YR 2014
FD 2014-01-21
LK https://hdl.handle.net/20.500.14352/124259
UL https://hdl.handle.net/20.500.14352/124259
LA eng
NO Araque, E., Arenas, C. B., Gamella, M., Reviejo, J., Villalonga, R., & Pingarrón, J. M. (2014). Graphene–polyamidoamine dendrimer–Pt nanoparticles hybrid nanomaterial for the preparation of mediatorless enzyme biosensor. Journal of Electroanalytical Chemistry, 717, 96-102.
NO Ministerio de Ciencia e Innovacion
NO Comunidad de Madrid
DS Docta Complutense
RD 1 ene 2026