Embedding Monodisperse LaOx Into Pt Nanoclusters for Ultra‐Stable and Efficient Hydrogen Isotope Oxidation

• DOI: 10.1002/advs.202504224
• Publication Date: 2025-05-29T14:10:16Z
• Authors: Guilin Wei; Jiangfeng Song; Yan Shi; Linsen Zhou; Xianglin Wang; Junhong Luo; Ning Liu; Feize Li; Xingwen Feng
• Keywords: Nanoclusters

Abstract Catalytic oxidation plays a crucial role in the efficient treatment of hydrogen isotopes, with key technical challenge being development high‐performance catalysts to enhance isotope removal efficiency, thereby reducing environmental pollution and ensuring public radiation safety. Herein, strategic control platinum nanoclusters confined within silicalite‐1 zeolites is reported high efficiency for isotopes under low‐temperature conditions first time. Incorporating single lanthanum oxide (LaO x ) into Pt adapts local charge adjacent atoms, significantly altering their electronic structure. The existence individual LaO species confirmed by X‐ray absorption spectroscopy aberration‐corrected electron microscopy, performance enhancement mechanism further probed theoretical calculations. This embedded both facilitates adjustment supplies abundant active oxygen species, leading energy barrier rate‐determining step (O * + H → OH ), accordance Mars‐van Krevelen mechanism. Consequently, during surprisingly long‐term restart test (≈267 d), PtLaOx@S‐1 maintained conversion rate over 99% at 50 °C space velocity 48,000 mL·g −1 ·h . study highlights potential sites enhancing oxidation.