Modelling electrocatalysis of hydroquinone oxidation by nicotinamide adenine dinucleaotide coenzyme encapsulated within SBA-15 and MCM-41 mesoporous aluminosilicates

Antonio Doménech, Hermenegildo García, Jordi Marquet, José Luis Bourdelande, José Raul Herance

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The electrochemical response of NADH associated to two mesoporous aluminosilicates, MCM-41 and SBA-15, is described upon attachment of such materials into polymer-film electrodes. The studied materials display a significant electrocatalytic activity towards the oxidation of 1,4-dihydrobenzoquinone, H2Q. Two models for describing the electrocatalytic process, based on the general theory of mediated electrocatalysis and the Lovric and Scholz formulation of the voltammetry of microparticles are discussed. Voltammetric and chronoamperometric data indicate that the electrocatalytic process involves the formation of a surface-confined NADH-H2Q adduct in the case of SBA-15, while a surface reaction/regeneration scheme prevails for MCM-41. © 2006 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)4897-4908
JournalElectrochimica Acta
Volume51
Issue number23
DOIs
Publication statusPublished - 15 Jun 2006

Keywords

  • Electrocatalysis
  • Electrochemistry
  • Mesoporous aluminosilicates
  • NADH

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