Hydration layer structure at solid-water interfaces
Hydration layer structure at solid-water interfaces
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DOI：
10.1557/mrs.2014.252
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发表时间：
2014-12-01
期刊：
影响因子：
5
通讯作者：
Lee, Sang Soo
中科院分区：
文献类型：
--
作者：
Fenter, Paul;Lee, Sang Soo
固体-水界面作为近环境条件下化学反应的主要场所在天然和合成系统中普遍存在。实例包括污染物与自然环境中的矿物质-水界面的相互作用、与能量储存相关的电极-电解质界面处的电化学反应（例如，离子吸附/双电层形成，离子插入），和结构材料的氧化（例如，锈）。然而，这些现象中的许多在机械层面上仍然很神秘。X射线反射率技术，使用高穿透性硬X射线，直接探测固体-水界面，通过原位研究。这种方法提供了新的见解分子尺度的结构和过程中发生在这些“湿”界面。在这篇文章中，我们回顾了最近的进展，这些系统的理解，特别是集中在组织的界面“水化层”和吸附的离子在带电的固液界面的重要作用。
The solid-water interface is ubiquitous in natural and synthetic systems as the primary site for chemical reactions under near-ambient conditions. Examples include the interactions of contaminants with mineral-water interfaces in natural environments, electrochemical reactions at the electrode-electrolyte interface relevant to energy storage (e.g., ion adsorption/electrical double layer formation, ion insertion), and oxidation of structural materials (e.g., rust). Yet many of these phenomena remain largely mysterious at a mechanistic level. The x-ray reflectivity technique, using highly penetrating hard x-rays, directly probes the solid-water interfaces through in situ studies. This approach has provided new insights into the molecular-scale structures and processes that occur at these "wet" interfaces. In this article, we review recent advances in the understanding of these systems, focusing specifically on the organization of interfacial "hydration layers" and the important role of adsorbed ions at charged solid-liquid interfaces.