Enhanced Magnetic Heating for Efficient Oxygen Evolution Reaction by Pinning Effect of Ferromagnetic/Antiferromagnetic Coupling
The magnetic heating effect under alternating magnetic fields (AMFs) has recently gained attention in catalysis due to its potential to greatly boost catalytic activities by providing localized heating around magnetic nanoparticles. However, nanoparticles still suffer from low magnetic heating efficiency due to their low magnetic anisotropy and thermal fluctuation, which is a key barrier in the wide application of AMF-assisted catalysis. Herein, by introducing the pinning effect of ferromagnetic/antiferromagnetic (FM/AFM) coupling, NiO/NiOOH (AFM/FM) core-shell nanoparticles exhibit significantly enhanced oxygen evolution reaction activity and resistance to thermal fluctuations under AMF, compared to NiOOH nanoparticles. Notably, magnetized NiO/NiOOH nanoparticles provide an overpotential of 186 mV at 10 mA cm<sup>-2</sup>, outperforming unmagnetized ones (218 mV) under the same conditions, further emphasizing the prominent role of the pinning effect in enhanced magnetic heating efficiency. This work provides valuable inspiration to design advanced magnetic catalysts and meet the challenge of the development of AMF-assisted catalysis.
Authors
- Shouguo Wang (ORCID: https://orcid.org/0000-0002-4488-2645)
- Shoujie Liu (ORCID: https://orcid.org/0000-0002-0021-5584)
- Wenda Zhou (ORCID: https://orcid.org/0000-0003-4371-3118)
- Wen Lei (ORCID: https://orcid.org/0000-0002-4112-0434)
- Cailei Yuan (ORCID: https://orcid.org/0000-0002-8088-0313)
- Xingfang Luo (ORCID: https://orcid.org/0000-0002-1254-7375)
- Chengwu Zou (ORCID: https://orcid.org/0000-0002-2836-2930)
- Jingyan Zhang (ORCID: https://orcid.org/0000-0003-0012-6191)
- Mingyue Chen (ORCID: https://orcid.org/0000-0002-9033-4383)
Institutions
- Anhui University (CN)
- The University of Western Australia (AU)
- Jiangxi Normal University (CN)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-09-30
- DOI
- https://doi.org/10.1021/acs.nanolett.4c02886
- Citations
- 3
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.35
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- National Key Research and Development Program of China