论文标题
高度拥挤的界面上的水合
Hydration at highly crowded interfaces
论文作者
论文摘要
了解界面处电解质的分子和电子结构，需要分析电极表面，离子和溶剂环境之间相等地位的相互作用。在这里，我们通过结合实验和理论来探索CS+水合（111）表面上CS+水合的初始阶段来应对这一挑战。值得注意的是，我们观察到CS离子的“ Inside Out out”溶剂化，即它们在金属表面上水簇周长的优先位置。此外，观察到包含多个CS+离子的水cs络合物在这些表面上形成。基于最大离子水协调和双层概念的建立模型无法解决这种情况，而微观相互作用的复杂相互作用是基本理解的关键。
Understanding the molecular and electronic structure of electrolytes at interfaces requires an analysis of the interactions between the electrode surface, the ions, and the solvent environment on equal footing. Here, we tackle this challenge by exploring the initial stages of Cs+ hydration on a Cu(111) surface by combining experiment and theory. Remarkably, we observe "inside out" solvation of Cs ions, i.e, their preferential location at the perimeter of the water clusters on the metal surface. In addition, water-Cs complexes containing multiple Cs+ ions are observed to form at these surfaces. Established models based on maximum ion-water coordination and the double layer notion cannot account for this situation and the complex interplay of microscopic interactions is the key to a fundamental understanding.
