Seeing how ice breaks the rule
Seeing how ice breaks the rule
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DOI：
10.1126/science.add0841
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发表时间：
2022-07
期刊：
影响因子：
56.9
通讯作者：
Y. Sugimoto
中科院分区：
文献类型：
--
作者：
Y. Sugimoto
描述使用显微镜观察冰单层的基本缺陷液体吸附到固体表面的过程随处可见，从衬衫上的汗渍到外太空的分子云。这个过程被称为润湿，在各种化学反应中起着重要作用，是许多过程的核心，如腐蚀和催化。例如，吸水层中的质子负责电池电极上电化学反应中的导电。获取质子的位置和动力学信息是一项重要但具有挑战性的任务。在本期的第315页，Tian等人（1）通过在金属表面制备水分子单层并使用原子力显微镜（AFM）观察引入单层的单个过量质子来实现这一点。他们确定了两种性质不同的阳离子与过量的质子，和丰度比的两种阳离子的金属基板的变化。
Description Basic defects in ice monolayers are seen using a microscope The process of liquid adsorption onto solid surfaces can be observed everywhere, from the sweat stain on your shirt to the molecular clouds in outer space. This process, known as wetting, plays an important role in various chemical reactions and is at the core of many processes, such as corrosion and catalysis. For example, protons in the water adsorption layer are responsible for electrical conduction in electrochemical reactions on battery electrodes. Obtaining information on the location and dynamics of the protons is an important but challenging task. On page 315 of this issue, Tian et al. (1) accomplish this by preparing monolayers of water molecules on metal surfaces and using atomic force microscopy (AFM) to visualize the individual excess protons introduced onto the monolayers. They identify two qualitatively different cations with excess protons, and the abundance ratio of the two cations vary with the metal substrates.