Magnetoelectric Effect in Hydrogen Harvesting: Magnetic Field as a Trigger of Catalytic Reactions (Adv. Mater. 19/2022)

Journal article


Kim, D., Efe, I., Torlakcik, H., Terzopoulou, A., Veciana, A., Siringil, E., Mushtaq, F., Franco, C., Arx, D., Sevim, S., Puigmartí‐Luis, J., Nelson, B., Spaldin, N.A., Gattinoni, C., Chen, X.‐Z. and Pané, S. (2022). Magnetoelectric Effect in Hydrogen Harvesting: Magnetic Field as a Trigger of Catalytic Reactions (Adv. Mater. 19/2022). Advanced Materials. 34 (19), p. 2270139. https://doi.org/10.1002/adma.202270139
AuthorsKim, D., Efe, I., Torlakcik, H., Terzopoulou, A., Veciana, A., Siringil, E., Mushtaq, F., Franco, C., Arx, D., Sevim, S., Puigmartí‐Luis, J., Nelson, B., Spaldin, N.A., Gattinoni, C., Chen, X.‐Z. and Pané, S.
Abstract

Magnetic fields have been regarded as an additional stimulus for electro- and photocatalytic reactions, but not as a direct trigger for catalytic processes. Multiferroic/magnetoelectric materials, whose electrical polarization and surface charges can be magnetically altered, are especially suitable for triggering and control of catalytic reactions solely with magnetic fields. Here, we demonstrate that magnetic fields can be employed as an independent input energy source for hydrogen harvesting by means of the magnetoelectric effect. Composite multiferroic CoFe2O4-BiFeO3 core-shell nanoparticles act as catalysts for the hydrogen evolution reaction (HER) that is triggered when an alternating magnetic field is applied to an aqueous dispersion of the magnetoelectric nanocatalysts. Based on density functional calculations, we propose that the hydrogen evolution is driven by changes in the ferroelectric polarization direction of BiFeO3 caused by the magnetoelectric coupling. We believe our findings will open new avenues towards magnetically induced renewable energy harvesting.

KeywordsMechanical Engineering; Mechanics of Materials; General Materials Science
Year2022
JournalAdvanced Materials
Journal citation34 (19), p. 2270139
PublisherWiley
ISSN0935-9648
1521-4095
Digital Object Identifier (DOI)https://doi.org/10.1002/adma.202270139
Web address (URL)https://doi.org/10.1002/adma.202110612
Publication dates
Online12 May 2022
Publication process dates
Accepted11 Mar 2022
Deposited16 Mar 2022
Publisher's version
File Access Level
Open
Accepted author manuscript
File Access Level
Controlled
Supplemental file
File Access Level
Open
Page range2110612
Licensehttp://onlinelibrary.wiley.com/termsAndConditions#vor
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