Engineered interfaces for heterostructured intermetallic nanomaterials
Engineered interfaces for heterostructured intermetallic nanomaterials
复制标题
DOI：
10.1038/s44160-023-00289-4
复制
发表时间：
2023-04
期刊：
影响因子：
--
通讯作者：
Jiaqi Yu;Yadong Yin;Wenyu Huang
中科院分区：
文献类型：
--
作者：
Jiaqi Yu;Yadong Yin;Wenyu Huang
异质结构纳米材料由于其独特的性质而在许多应用中受到关注，这些性质取决于每个单独组分的身份以及它们之间的界面。然而，异质结构的合成和元件之间的界面控制的困难限制了它们的应用。在这里，我们开发了一种胶体合成方法来制备异质结构的金属间纳米材料（iNMs）和工程师的各个组件之间的接口，基于电流置换机制和精确控制的前体添加。多达四个不同的金属间相分离段可以组合在一个纳米颗粒。纳米精度相分离控制沿着一维的iNM被证明是通过利用在金属间化合物-金属界面的层状生长途径，导致最大数量的不同金属间化合物相之间的界面。通过调整粒子中界面的数量，我们展示了异质结构iNM中界面与体积比的系统控制。这种方法为制备具有可控界面的复杂异质结构纳米材料提供了巨大的潜力，使其能够探索其性质和应用。
Heterostructured nanomaterials are of interest for many applications due to their unique properties, which depend on the identity of each individual component and the interface between them. However, the difficulty of controlling the synthesis of heterostructures and the interfaces between components limits their applications. Here we develop a colloidal synthetic method to prepare heterostructured intermetallic nanomaterials (iNMs) and engineer the interfaces between the individual components, based on the galvanic replacement mechanism and precisely controlled addition of precursors. Up to four distinct intermetallic phase-segregated segments could be combined in one nanoparticle. Nanometre-precision phase-segregated control along one dimension of iNMs was demonstrated by taking advantage of the layered growth pathway at the intermetallic–metal interfaces, leading to a maximum number of interfaces between different intermetallic phases. By adjusting the number of interfaces in a particle, we demonstrated systematic control of the interface-to-bulk ratio in heterostructured iNMs. This method offers great potential for preparing complex heterostructured nanomaterials with controlled interfaces, enabling the exploration of their properties and applications.