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Uphill production of dihydrogen by enzymatic oxidation of glucose without an external energy source

Suraniti, Emmanuel and Merzeau, Pascal and Roche, Jérôme and Gounel, Sébastien and Mark, Andrew G. and Fischer, Peer and Mano, Nicolas and Kuhn, Alexander Uphill production of dihydrogen by enzymatic oxidation of glucose without an external energy source. (2018) Nature Communications, 9 (3229). ISSN 2041-1723

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Official URL: https://doi.org/10.1038/s41467-018-05704-5


Chemical systems do not allow the coupling of energy from several simple reactions to drive a subsequent reaction, which takes place in the same medium and leads to a product with a higher energy than the one released during the first reaction. Gibbs energy considerations thus are not favorable to drive e.g., water splitting by the direct oxidation of glucose as a model reaction. Here, we show that it is nevertheless possible to carry out such an energetically uphill reaction, if the electrons released in the oxidation reaction are temporarily stored in an electromagnetic system, which is then used to raise the electrons’ potential energy so that they can power the electrolysis of water in a second step. We thereby demonstrate the general concept that lower energy delivering chemical reactions can be used to enable the formation of higher energy consuming reaction products in a closed system.

Item Type:Article
HAL Id:hal-02001685
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux - ENSCPB (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Max-Planck-Institut für Intelligente Systeme (GERMANY)
Other partners > Université de Bordeaux 1 (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Universität Stuttgart (GERMANY)
Other partners > Université de Bordeaux (FRANCE)
Other partners > Université Montesquieu - Bordeaux 4 (FRANCE)
Laboratory name:
Deposited On:31 Jan 2019 11:03

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