Instituto de Quimica, Universidade de Sao Paulo, 05508-000, Sao Paulo, Brazil.
Nanoscale. 2012 Sep 28;4(19):5826-34. doi: 10.1039/c2nr31165h. Epub 2012 Aug 23.
The synthesis and characterization methods of metal nanoparticles (NPs) have advanced greatly in the last few decades, allowing an increasing understanding of structure-property-performance relationships. However, the role played by the ligands used as stabilizers for metal NPs synthesis or for NPs immobilization on solid supports has been underestimated. Here, we highlight some recent progress in the preparation of supported metal NPs with the assistance of ligands in solution or grafted on solid supports, a modified deposition-reduction method, with special attention to the effects on NPs size, metal-support interactions and, more importantly, catalytic activities. After presenting the general strategies in metal NP synthesis assisted by ligands grafted on solid supports, we highlight some recent progress in the deposition of pre-formed colloidal NPs on functionalized solids. Another important aspect that will be reviewed is related to the separation and recovery of NPs. Finally, we will outline our personal understanding and perspectives on the use of supported metal NPs prepared through ligand-assisted methods.
在过去几十年中，金属纳米粒子（NPs）的合成和表征方法有了很大的发展，使人们对结构-性能-性能关系有了越来越深入的了解。然而，作为金属 NPs 合成稳定剂或 NPs 固定在固体载体上的配体的作用却被低估了。在这里，我们重点介绍了一些最近在配体协助下制备负载金属 NPs 的进展，包括改良的沉积-还原方法，特别关注对 NPs 尺寸、金属-载体相互作用的影响，以及更重要的催化活性。在介绍了在固体载体上接枝配体辅助金属 NP 合成的一般策略之后，我们重点介绍了最近在功能化固体上沉积预形成胶体 NPs 的进展。另一个将被回顾的重要方面与 NPs 的分离和回收有关。最后，我们将概述我们个人对使用通过配体辅助方法制备的负载金属 NPs 的理解和观点。
