Interest of the Sol-Gel Approach for Multiscale Tailoring of Porous Bioelectrode Surfaces
| Autor: | Yémima Bon Saint Côme, Hélène Lalo, Mathieu Etienne, Alain Walcarius, Rolf Hempelmann, Gert-Wieland Kohring, Alexander Kuhn, Zhijie Wang |
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| Přispěvatelé: | Université de Bordeaux (UB), Institut des Sciences Moléculaires (ISM), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Université Montesquieu - Bordeaux 4-Institut de Chimie du CNRS (INC), Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Universität des Saarlandes [Saarbrücken], Department of Materials Science, Saarland University [Saarbrücken] |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Analytical Chemistry chemistry.chemical_compound Electrochemistry Gold nanoparticles [CHIM]Chemical Sciences Porosity Electrochemically-assisted deposition Sol-gel Trinitrofluorenone Silica gel Macroporous gold 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Colloidal gold Transmission electron microscopy Dehydrogenase Electrode 0210 nano-technology Hybrid material |
| Zdroj: | Electroanalysis; Vol 25 Electroanalysis Electroanalysis, Wiley-VCH Verlag, 2013, 25 (3, SI), pp.621-629. ⟨10.1002/elan.201200319⟩ |
| ISSN: | 1040-0397 1521-4109 |
| DOI: | 10.1002/elan.201200319 |
| Popis: | International audience; Gold nanoparticles have been co-encapsulated with D-sorbitol dehydrogenase and diaphorase in electrodeposited thin sol-gel films. We demonstrate here that the nanoparticles allow improving significantly the catalytic efficiency of the bioelectrodes. The hybrid material was electrodeposited in the cavities of macroporous electrodes and characterized by high-resolution transmission electron microscopy and electrochemistry. Well-defined silica gel layers containing homogeneously dispersed nanoparticles were obtained, leading to high current densities in the presence of D-sorbitol. The access to the internal porosity of the macroporous electrode was not hindered by the presence of the electrodeposited sol-gel layer. In addition, a very significant enhancement factor, that describes the current increase with the increasing macroporous surface area was obtained due to the contribution of the tridimensional gold nanoparticle network. |
| Databáze: | OpenAIRE |
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