Janssen Annemieke, Nguyen Quynh N, Xia Younan
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA.
The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, 30332, USA.
Angew Chem Int Ed Engl. 2021 May 25;60(22):12192-12203. doi: 10.1002/anie.202017076. Epub 2021 Feb 2.
In addition to the conventional knobs such as composition, size, shape, and defect structure, the crystal structure (or phase) of metal nanocrystals offers a new avenue for engineering their properties. Various strategies have recently been developed for the fabrication of colloidal metal nanocrystals in metastable phases different from their bulk counterparts. With a focus on noble metals, we begin with a brief introduction to their atomic packing, followed by a discussion about five major synthetic approaches to their colloidal nanocrystals in unconventional phases. We then highlight the success of synthesis in terms of mechanistic insights and experimental controls, as well as the enhanced catalytic properties. We end this Minireview with perspectives on the remaining issues and future opportunities.
除了诸如组成、尺寸、形状和缺陷结构等传统旋钮外，金属纳米晶体的晶体结构（或相）为调控其性能提供了一条新途径。最近已开发出各种策略来制备与体相不同的亚稳相胶体金属纳米晶体。以贵金属为重点，我们首先简要介绍其原子堆积，然后讨论制备非常规相胶体纳米晶体的五种主要合成方法。接着，我们将从机理见解和实验控制以及增强的催化性能方面突出合成的成功之处。我们以对剩余问题和未来机遇的展望结束这篇综述。
