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Fabrication of magnetic superstructure NiFe2O4@MOF-74 and its derivative for electrocatalytic hydrogen evolution with AC magnetic field
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Zheng, Hang-bo, Chen, Hui-hui, Wang, Yuan-li, Gao, Peng-zhao, Liu, Xiao-pan and Rebrov, Evgeny V. (2020) Fabrication of magnetic superstructure NiFe2O4@MOF-74 and its derivative for electrocatalytic hydrogen evolution with AC magnetic field. ACS Applied Materials & Interfaces, 12 (41). pp. 45987-45996. doi:10.1021/acsami.0c11816 ISSN 1944-8252.
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Official URL: https://doi.org/10.1021/acsami.0c11816
Abstract
As an ideal hydrogen production route, electrolyzed water still faces the challenges of high cost of noble-metal electrocatalysts and low performance of non-noble-metal catalysts in scalable applications. Recently, introduction of external fields (such as magnetic fields, light fields, etc.) to improve the electrocatalytic water splitting performance of non-noble-metal catalysts has attracted great attention due to their simplicity. Here, a simple method for preparing magnetic superstructure (NiFe2O4@MOF-74) is described, and the hydrogen evolution reaction (HER) behavior of its carbonized derivative, a ferromagnetic superstructure, is revealed in a wide range of applied voltage under an AC magnetic field. The overpotential (@10 mA cm–2) required for the HER of the obtained ferromagnetic superstructure in 1 M KOH was reduced by 31 mV (7.7%) when a much small AC magnetic field (only 2.3 mT) is applied. Surprisingly, the promotion effect of the AC magnetic field is not monotonically increasing with the increase of the applied voltage or the strength of AC magnetic field, but increasing first, then weakening. This unusual behavior is believed to be mainly caused by the enhanced induced electromotive force and the additional energy by the applied AC magnetic field. This discovery provides a new idea for adjusting the performance of electrocatalytic reactions.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Nickel compounds -- Magnetic properties , Metal-organic frameworks , Hydrogen evolution reaction , Iron-nickel alloys -- Magnetic properties | ||||||||
Journal or Publication Title: | ACS Applied Materials & Interfaces | ||||||||
Publisher: | American Chemical Society (ACS) | ||||||||
ISSN: | 1944-8252 | ||||||||
Official Date: | 14 October 2020 | ||||||||
Dates: |
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Volume: | 12 | ||||||||
Number: | 41 | ||||||||
Page Range: | pp. 45987-45996 | ||||||||
DOI: | 10.1021/acsami.0c11816 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | “This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].” | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 8 June 2021 | ||||||||
Date of first compliant Open Access: | 18 September 2021 | ||||||||
RIOXX Funder/Project Grant: |
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