以单晶银纳米方块为液相外延生长晶种的纳米晶形貌可控合成方法

本文简要综述了以单晶银纳米方块做为可控外延生长的品种来合成各种银纳米晶的相关工作．通过改变银前驱体和晶种颗粒的比例、表面包裹分子及其用量、还原剂浓度、添加欠电位金属阳离子等手段，我们成功地控制了银纳米晶的外延生长方向和裸露晶面，并合成出一系列尺寸、形貌可控的银纳米晶，包括立方体、立方八面体、八面体、八足体、二十四面体、凹面立方八面体和凹面八面体等．除了对合成方法和过程的介绍，本文还简要讨论了每种纳米结构的形成机制．

Controlling the evolution of cubic Ag seeds into nanocrystals with different morphologies

This review focuses on seed-mediated growth of Ag nanocrystals with defferent morphologies by using Ag nanocubes as the seeds. We specifically discuss how the growth habit of Ag cubic seeds can be controlled to maneuver the shape evolution of Ag nanocrystals during a seed-mediated synthesis. By controlling the reaction parameters, such as the ratio of Ag precursor to the seed, the capping agent, the reductant, and the foreign ions, we have successfully prepared a series of Ag nanocrystals with controlled sizes and shapes. The products include cubes, cuboctahedrons, octahedrons, octapods, trisoctahedrons, concave cuboctahedrons, and concave octahedrons. In addition to the synthetic protocols, we also provides a brief account of the mechanism responsible for the formation of each type of Ag nanocrystals.