Atomic imaging of dynamic behaviour at solid-liquid interfaces

固液界面动态行为的原子成像

• 批准号: EP/Y024303/1
• 负责人: Sarah Haigh
• 金额: $ 323.18万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FY024303%2F1
• 关键词: Atomic; imaging; dynamic; behaviour; solid

Problem statement: Dynamic processes at solid-liquid interfaces are of key importance across broad areas of science and technology. However, no current technique can image solids interacting with liquids at atomic resolution. Atomic sensitivity is needed to understand the role of surface defects and chemical inhomogeneities on complex diffusion pathways and adsorption/desorption behaviour.Our solution: This project will develop a world-leading 2D heterostructure in situ atomic resolution TEM platform to provide a stepchange in understanding of dynamic atomic scale processes at solid-liquid interfaces. Focussing on inorganic surfaces, we will study changes in the behaviour of the surface, adsorbed species and near surface ions as a function of temperature, applied bias, nanoconfinement, surface morphology/composition, liquid flow and solution chemistry. The new knowledge gained from our dynamic in situ investigations will be used to develop the improved materials needed to achieve a sustainable energy future. Our two application work packages (WPs) focus efforts on new fundamental understanding to enable:- synthesis of scalable heterogenous (electro)catalysts with greater stability and function (WP1)- engineering of adsorption/filtration membranes with greater function and resistance to degradation (WP2).The ambitious science goals in WP1 and WP2 are only achievable by the parallel development of pioneering new experimental capabilities in WP3.

问题陈述：固液界面的动态过程在科学和技术的广泛领域中至关重要。然而，目前还没有技术能够以原子分辨率对固体与液体相互作用进行成像。需要原子灵敏度来了解表面缺陷和化学不均匀性对复杂扩散途径和吸附/解吸行为的作用。我们的解决方案：该项目将开发世界领先的二维异质结构原位原子分辨率 TEM 平台，以提供对理解的重大转变固液界面的动态原子尺度过程。重点关注无机表面，我们将研究表面、吸附物质和近表面离子的行为随温度、施加偏压、纳米限制、表面形态/成分、液体流动和溶液化学的变化。我们从动态现场调查中获得的新知识将用于开发实现可持续能源未来所需的改进材料。我们的两个应用工作包 (WP) 重点关注新的基本认识，以实现： - 合成具有更高稳定性和功能的可扩展异质（电）催化剂 (WP1) - 设计具有更强功能和抗降解性的吸附/过滤膜 (WP2) ). WP1 和 WP2 中雄心勃勃的科学目标只有通过 WP3 中开拓性新实验能力的并行发展才能实现。