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watersplit

Producing hydrogen by water splitting

Total Cost €

0

EC-Contrib. €

0

Partnership

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Project "watersplit" data sheet

The following table provides information about the project.

Coordinator
WEIZMANN INSTITUTE OF SCIENCE 

Organization address
address: HERZL STREET 234
city: REHOVOT
postcode: 7610001
website: www.weizmann.ac.il

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Israel [IL]
 Total cost 150˙000 €
 EC max contribution 150˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-PoC
 Funding Scheme ERC-POC
 Starting year 2017
 Duration (year-month-day) from 2017-07-01   to  2018-12-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    WEIZMANN INSTITUTE OF SCIENCE IL (REHOVOT) coordinator 150˙000.00

Map

 Project objective

This proposal describes a plan to prove the role of electrons’ spin in the photocatalyzed oxidation of water; reaction of two water molecules to form two hydrogen molecules and a single oxygen molecule in its triplet ground state. We found that the catalyst performance is affected by its chiral symmetry, or lack thereof. It is well known that the electrochemical and photoelectrochemical splitting of water requires a high overpotential and that it can be changed by the choice of catalyst; however, the origin of the overpotential was not fully understood. In addition, the artificial water splitting reaction is commonly hampered by the production of hydrogen peroxide, which reduces the hydrogen yield and acts as a strong oxidation agent that can damage the electrochemical cell. The proposed studies will build on our new results which suggest that the chirality of the photoanode material can reduce the overpotential for water splitting and enhance the reaction rate. We found that spin-polarized current causes a spin correlation between the two OH intermediates in the reaction. This spin correlation could both suppress production of hydrogen peroxide and enhance the formation rate of oxygen molecules in the triplet state, improving water splitting efficiency. This proposal describes a program in which we intend to build upon our finding from our research performed in the framework of our ERC project, and to prove the concept of spin controlled water splitting and thereby produce an efficient hydrogen producing cell.

 Publications

year authors and title journal last update
List of publications.
2019 K. B. Ghosh, Wenyan Zhang, F. Tassinari, Y. Mastai, O. Lidor-Shalev, R. Naaman, P. Möllers, D. Nürenberg, H. Zacharias, J. Wei, E. Wierzbinski, D. H. Waldeck
Controlling Chemical Selectivity in Electrocatalysis with Chiral CuO-Coated Electrodes
published pages: 3024-3031, ISSN: 1932-7447, DOI: 10.1021/acs.jpcc.8b12027
The Journal of Physical Chemistry C 123/5 2019-07-19
2017 Wilbert Mtangi, Francesco Tassinari, Kiran Vankayala, Andreas Vargas Jentzsch, Beatrice Adelizzi, Anja R. A. Palmans, Claudio Fontanesi, E. W. Meijer, Ron Naaman
Control of Electrons’ Spin Eliminates Hydrogen Peroxide Formation During Water Splitting
published pages: 2794-2798, ISSN: 0002-7863, DOI: 10.1021/jacs.6b12971
Journal of the American Chemical Society 139/7 2019-07-19
2018 Wenyan Zhang, Koyel Banerjee-Ghosh, Francesco Tassinari, Ron Naaman
Enhanced Electrochemical Water Splitting with Chiral Molecule-Coated Fe 3 O 4 Nanoparticles
published pages: 2308-2313, ISSN: 2380-8195, DOI: 10.1021/acsenergylett.8b01454
ACS Energy Letters 3/10 2019-07-19

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