中文摘要：

概述了具有面心立方结构的金属纳米晶体的可控合成方法，阐述了合成过程中的关键控制参数。以课题组近年来的进展为例，重点讨论了金属纳米晶体的晶面调控方法．例如，通过表面修饰剂的选择，可以有选择性地获得具体不同低指数表面晶面的纳米晶体；通过晶体生长位点的活化，在晶种介导生长过程中可以形成具有高指数晶面的纳米晶体．由于表面晶面的种类决定了纳米晶体的表面原子排列方式，其调控赋予了材料在分子吸附与活化过程中的可控性，从而使得材料具有独特的催化性能．

英文摘要：

The methodology for controlled synthesis of metal nanocrystals with a face-centered cubic （fcc） structure was summarized, illustrating the key parameters for the shape control in the synthesis. Taking the recent progress in our research group as an example, the facet control of metal nanocrystals was demonstrated. For instance, nanocrystals with various low-index facets can be rationally synthesized by selecting appropriate capping agents; the formation of high-index facets can be achieved on the surface of nanocrystals by activating specific sites for atomic addition. As various surface facets possess different atomic arrangements, they exhibit tunable properties in molecular adsorption and activation, which allow us to tailor their performance in catalysis.