Local Atom Disorder Mediated Crystal Facet Valence State of PtCu Alloy for Ultrafast Ammonia Oxidation Dehydrogenation

Pt (200) facet of platinum-based alloys exhibit high potential in ammonia oxidation reaction (AOR), but is still a huge bottleneck in activity enhancement due to the sluggish NHx-dehydrogenation kinetics and H-poisoning. Herein, a novelly local-disordered PtCu alloy, with an increasing low-valence-platinum ratio on the (200) facet by H2/Ar post-annealing ambient, was engineered to atomically boost AOR dehydrogenation behaviour through the reconstruction microenvironment of Pt (200) plane.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于PtCu合金的(200)晶面，通过引入局部原子无序结构并利用H2/Ar后处理环境提高低价铂比例，旨在优化铂基合金的氨氧化反应性能，特别是加速脱氢动力学并缓解氢中毒问题，以提升反应活性。