Spin Magnetic Effect Activate Dual Site Intramolecular O─O Bridging for Nickel-Iron Hydroxide Enhanced Oxygen Evolution Catalysis.

ABSTRACT: The oxygen evolution reaction (OER) involves the recombination of diamagnetic hydroxyl (OH) or water (H₂O) into the paramagnetic triplet state of oxygen (O₂). The spin conservation of oxygen intermediates plays a crucial role in OER, however, research on spin dynamics during the catalytic process remains in its early stages. Herein, β-Ni(OH)₂ and Fe-doped β-Ni(OH)₂ (Ni₅Fe₁(OH)₂) are utilized as model catalysts to understand the mechanism of spin magnetic effects at iron (III) sites during OER. Combined with magnetic characterization, it is founded that the introduction of Fe transforms the antiferromagnetic Ni(OH)₂ into a ferromagnetic material. Testing the magnetic response of the catalyst under an ext

SUBMITTER: Dong H 

PROVIDER: S-EPMC11904962 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature