Peng Xiaohong, Pan Qinmin, Rempel Garry L
Department of Polymer Science and Engineering, South China University of Technology, Guangzhou, PR China.
Chem Soc Rev. 2008 Aug;37(8):1619-28. doi: 10.1039/b716441f. Epub 2008 Jun 26.
Bimetallic dendrimer-encapsulated nanoparticles (DENs) are important materials, because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts. This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis, characterization, and applications as catalysts. Bimetallic DENs can be made mainly via three routes: co-complexation, sequential loading, and partial displacement. The research in bimetallic DENs has been significantly promoted by the advancement of characterization instruments. The performances of bimetallic DENs as homogeneous and heterogeneous catalysts in organic synthesis have been compared with both monometallic DENs and their physical mixtures. It is concluded that the synergistic electronic effect in bimetallic nanoparticles enhances their catalytic activities.
双金属树枝状大分子包裹的纳米颗粒（DENs）是重要的材料，因为当它们用作催化剂时，在许多体系中已证明与单金属DENs相比性能有所提高。本专题综述聚焦于双金属DENs在合成、表征及作为催化剂的应用方面的最新研究进展。双金属DENs主要可通过三种途径制备：共络合、顺序负载和部分置换。表征仪器的进步显著推动了双金属DENs的研究。已将双金属DENs作为均相和多相催化剂在有机合成中的性能与单金属DENs及其物理混合物进行了比较。得出的结论是，双金属纳米颗粒中的协同电子效应增强了它们的催化活性。
