In Situ Detection of Interfacial Ions at the Single-Bond Level,Journal of the American Chemical Society

当前位置： X-MOL 学术 › J. Am. Chem. Soc. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

In Situ Detection of Interfacial Ions at the Single-Bond Level
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2024-09-12 , DOI: 10.1021/jacs.4c06738
Xiao Wei ₁ , Xinyue Chang ₁ , Jie Hao ₁ , Fengyi Liu ₁ , Ping Duan ₁ , Chuancheng Jia ₁ , Xuefeng Guo _{1,

2}

Affiliation

Detecting the ionic state at the solid–liquid interface is essential to reveal the various chemical and physical processes that occur at the interface. In this study, the adsorption states of the highly electronegative ions F^– and OH^– at the solid–liquid interface are detected by using the scanning tunneling microscopy break junction technique. With the active hydrogen atom of the amino group as a probe, the formed ionic hydrogen bonds are successfully detected, thereby enabling in situ monitoring of the ionic state at the solid–liquid interface. Through noise power spectral density analysis and theoretical simulations, we reveal the mechanism by which ionic hydrogen bonds at the interface affect the charge transport properties. In addition, we discover that the ionic state at the solid–liquid interface can be effectively manipulated by electric fields. Under high electric fields, the concentration of the anion near the electrode is higher, and the proportion of hydrogen bonds formed is greater than that under low electric fields. This study of the interfacial ionic state at the single-bond level provides guidance for the design of high-performance materials for energy conversion and environmental purification.

中文翻译：

单键水平界面离子的原位检测

检测固液界面的离子态对于揭示界面处发生的各种化学和物理过程至关重要。在这项研究中，利用扫描隧道显微镜断裂结技术检测了固液界面上高电负性离子F ^-和OH ^-的吸附状态。以氨基的活性氢原子为探针，成功检测到形成的离子氢键，从而实现固液界面离子态的原位监测。通过噪声功率谱密度分析和理论模拟，我们揭示了界面离子氢键影响电荷传输特性的机制。此外，我们发现固液界面的离子态可以通过电场有效地操纵。高电场下，电极附近的阴离子浓度较高，形成氢键的比例也比低电场下大。这项单键水平界面离子态的研究为能量转换和环境净化的高性能材料的设计提供了指导。

更新日期：2024-09-12

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南