Plasmon-Driven Reorientation of Interfacial Water for Wastewater Electrolysis with Light-Emitting Diode Illumination.

ABSTRACT: Regulating the orientation and dynamics of interfacial water is essential for optimizing electrocatalytic reactions, yet it remains challenging due to its intrinsic disorder. Here, it is demonstrated that localized surface plasmon resonance (LSPR) on an Ir single-atom Au catalyst actively restructures the hydrogen-bond (HB) network, accelerating ammonia oxidation reaction kinetics. In situ Raman spectroscopy and density functional theory calculations reveal that plasmonic excitation shifts the HB network toward a more flexible configuration, favoring the formation of three-coordinated hydrogen-bonded water (3HB·H₂O) while suppressing cation-associated species (K⁺·H₂O). This transformation enhances the dehydrogenation process and stabilizes reaction intermed

SUBMITTER: Che Mohamad NAR 

PROVIDER: S-EPMC12463107 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature