Narrow Size Distribution Metal Nanoparticles Prepared via a Metal-Organic Framework Approach for Electrocatalytic Applications

该项目运用了最新的知识，即如何利用纳米颗粒的大小、形状和组成来可预测地调整催化活性，以合成和优化用于能源应用的纳米结构电催化剂。这些知识是基于理论和实验概念，包括所谓的广义配位数（GCN）和通过电化学扫描隧道显微镜测量（EC-STM）在反应条件下对活性位点性质的原位阐明。实现对氧还原反应（ORR）具有高质量活性的电催化剂将通过独特的程序进行，该程序使用原子精确的金属羰基簇作为纳米颗粒的定制前体和金属有机框架作为模板。该项目旨在利用定义明确的金属和金属合金纳米颗粒进一步了解电催化中尺寸-结构-组成-活性关系的作用。

This project uses recent knowledge on how to predictably tailor the catalytic activity using nanoparticle size, shape and composition in order to synthesize and optimize nanostructured electro-catalysts for energy applications. This knowledge is based on both theoretical and experimental concepts involving so-called generalized coordination numbers (GCN) and in situ elucidation of the nature of active sites under reaction conditions through electrochemical scanning tunneling microscopy measurements (EC-STM). Implementation to obtain electrocatalysts with high mass activities towards the oxygen reduction reactions (ORR) will be performed through the unique procedures, which use atom-precise metal carbonyl clusters as tailored precursors for nanoparticles and metal-organic frameworks as templates. The project aims at further fundamental understanding of the role of the size-structure-composition-activity relations in electrocatalysis using well-defined metal and metal alloy nanoparticles.