Abstract Gold and gold-based bimetallic catalysts have shown great potential for many important chemical transformation reactions owing to their good activity and high selectivity under relatively mild conditions. However, elucidating their structure-property relationships remains a major challenge because of size distributions and ill-defined structures (i.e. structural heterogeneity) of conventional nanoparticle catalysts. Recently, controlled synthesis of homogold and gold-based bimetal nanoclusters with precise atom numbers have been accomplished, and more importantly their atomic structures have been elucidated, which provide new model systems for understanding the catalytic behavior at the atomic level. Due to their ultra-small size, gold and bimetal nanoclusters exhibit unique properties, which contribute to novel catalysts or precatalysts for many chemical reactions. Herein, we review the recent progress in the catalytic research of atomically precise gold and gold-based bimetal nanoclusters. Specifically, this review covers the application of nanoclusters with or without ligands as catalysts for reactions such as selective oxidation, selective hydrogenation, C–C coupling and photocatalysis. Finally, we provide some future perspectives about metal nanocluster catalysis.

中文翻译：

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金和金基双金属纳米团簇的多相催化

摘要 金和金基双金属催化剂由于在相对温和的条件下具有良好的活性和高选择性，在许多重要的化学转化反应中显示出巨大的潜力。然而，由于常规纳米颗粒催化剂的尺寸分布和不明确的结构（即结构异质性），阐明它们的结构-性能关系仍然是一个主要挑战。最近，已经完成了具有精确原子数的同金和金基双金属纳米团簇的可控合成，更重要的是已经阐明了它们的原子结构，这为理解原子水平的催化行为提供了新的模型系统。由于其超小尺寸，金和双金属纳米团簇表现出独特的性质，这有助于许多化学反应的新型催化剂或预催化剂。在此，我们回顾了原子级精确金和金基双金属纳米团簇催化研究的最新进展。具体而言，这篇综述涵盖了带或不带配体的纳米团簇作为选择性氧化、选择性氢化、C-C 偶联和光催化等反应的催化剂的应用。最后，我们提供了一些关于金属纳米团簇催化的未来前景。