A1 Refereed original research article in a scientific journal
Effective catalytic electrode system based on polyviologen and Au nanoparticles multilayer
Authors: Zanardi C, Terzi F, Zanfrognini B, Pigani L, Seeber R, Lukkari J, Aaritalo T
Publisher: ELSEVIER SCIENCE SA
Publication year: 2010
Journal: Sensors and Actuators B: Chemical
Journal name in source: SENSORS AND ACTUATORS B-CHEMICAL
Journal acronym: SENSOR ACTUAT B-CHEM
Number in series: 1
Volume: 144
Issue: 1
First page : 92
Last page: 98
Number of pages: 7
ISSN: 0925-4005
DOI: https://doi.org/10.1016/j.snb.2009.10.041
Abstract
Au nanoparticles encapsulated by very labile chloride ions are synthesised and characterised. Through layer-by-layer deposition technique they are stably anchored to an electrode surface, using a polyviologen derivative as the polycationic organic component. The structure and morphology of the multilayer is exhaustively Studied by UV-vis spectroscopy, X-ray diffraction, scanning and transmission electron microscopy. The nanocomposite material shows very interesting electrocatalytic properties with respect to the reduction of H(2)O(2), which Occurs at particularly less negative potentials. Furthermore, the presence of Au nanoparticles inside the electrode coating greatly improves the sensitivity of the electrochemical system. The system results to be a well suitable sensor for H(2)O(2) quantification, with high sensitivity and low detection limit. (C) 2009 Elsevier B.V. All rights reserved.
Au nanoparticles encapsulated by very labile chloride ions are synthesised and characterised. Through layer-by-layer deposition technique they are stably anchored to an electrode surface, using a polyviologen derivative as the polycationic organic component. The structure and morphology of the multilayer is exhaustively Studied by UV-vis spectroscopy, X-ray diffraction, scanning and transmission electron microscopy. The nanocomposite material shows very interesting electrocatalytic properties with respect to the reduction of H(2)O(2), which Occurs at particularly less negative potentials. Furthermore, the presence of Au nanoparticles inside the electrode coating greatly improves the sensitivity of the electrochemical system. The system results to be a well suitable sensor for H(2)O(2) quantification, with high sensitivity and low detection limit. (C) 2009 Elsevier B.V. All rights reserved.
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