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本文概述了我们最近利用表面增强拉曼散射技术研究金属 /乙腈界面区痕 /微量水分子的界面行为所取得的进展。研究表明银电极双电层中存在多种吸附模式下的水分子结构。处于非水环境下的水分子的νO H与水系相比存在明显的差别。水分子间的氢键被不同程度地破坏导致几种模式下的水分子νO H均要高于水体系。铂电极表面的研究表明水分子的介入很大程度上限制了铂表面乙腈分子的解离吸附反应。
This article provides an overview of the recent progress we made in using surface-enhanced Raman scattering to study the interfacial behavior of trace / trace water molecules at the metal / acetonitrile interface. Studies have shown that there are multiple adsorption modes of water molecules in the silver electrode double layer. The νO H of water molecules in non-aqueous environment is obviously different from that of water system. Hydrogen bonds between water molecules are destroyed to varying degrees, resulting in several modes of water molecules νO H were higher than the water system. Studies on the surface of platinum electrodes show that the intervention of water molecules largely limits the dissociative adsorption reaction of acetonitrile molecules on the platinum surface.