ABSTRACT

Metal nanoclusters (NCs) are gaining much attention in nanoscale materials research because they exhibit size-specific physicochemical properties that are not observed in the corresponding bulk metals. Among them, silver (Ag) NCs can be precisely synthesized not only as pure Ag NCs but also as anion-templated Ag NCs. For anion-templated Ag NCs, we can expect the following capabilities: 1) size and shape control by regulating the central anion (anion template); 2) stabilization by adjusting the charge interaction between the central anion and surrounding Ag atoms; and 3) functionalization by selecting the type of central anion. In this review, we summarize the synthesis methods and influences of the central anion on the geometric structure of anion-templated Ag NCs, which include halide ions, chalcogenide ions, oxoanions, polyoxometalate, or hydride/deuteride as the central anion. This summary provides a reference for the current state of anion-templated Ag NCs, which may promote the development of anion-templated Ag NCs with novel geometric structures and physicochemical properties.

摘要

金属纳米团簇（NC）在纳米级材料研究中受到广泛关注，因为它们表现出在相应块体金属中未观察到的特定尺寸的物理化学特性。其中，银（Ag）NCs不仅可以精确合成纯Ag NCs，还可以精确合成阴离子模板Ag NCs。对于阴离子模板Ag NCs，我们可以期待以下功能：1）通过调节中心阴离子（阴离子模板）来控制尺寸和形状；2）通过调节中心阴离子与周围Ag原子之间的电荷相互作用来稳定；3)通过选择中心阴离子的类型进行功能化。在这篇综述中，我们总结了中心阴离子的合成方法以及对阴离子模板Ag NCs几何结构的影响，其中包括卤化物离子、硫族化物离子、含氧阴离子、多金属氧酸盐或氢化物/氘化物作为中心阴离子。该总结为阴离子模板化银纳米颗粒的研究现状提供了参考，可能促进具有新颖几何结构和理化性质的阴离子模板化银纳米颗粒的开发。