Metal-metal oxide hybrid materials, typically composed of metal nanoparticles anchored on metal oxides matrix, are devoted enormous attentions as famous heterogeneous catalysts. The interactions between noble metals and metal oxides as well as their interfaces have been proven to be the origin of their excellent catalytic performance. Deep understandings on the interactions between noble metals and metal oxides at atomic precision, thus to precisely assess their contributions to catalysis, can serve as basic principles for catalyst design. In recent years, polyoxometalates (POMs), which in principle can be regarded as atomically precise metal oxide clusters, have been shown to have strong affinity to noble metals, thus forming diverse kinds of POM-noble metal hybrid clusters. Their well-resolved atomically precise structures and hybrid nature promise them as ideal platforms to understand the interfaces and interactions between noble metals and metal oxides. In this review, metal-metal oxide interface is classified into different categories based on the different configurations of hybrid clusters, and aims to understand the interface structures and electronic correlations between POMs and noble metals at the atomic precision. Based on these basic understandings, the study provides the perspectives on the challenges and research efforts to be paid in the future.

中文翻译：

---

多金属氧酸盐-贵金属杂化团簇中的原子精确金属-金属氧化物界面


金属-金属氧化物杂化材料通常由锚定在金属氧化物基体上的金属纳米颗粒组成，作为著名的非均相催化剂而受到广泛关注。贵金属和金属氧化物之间的相互作用以及它们的界面已被证明是其优异催化性能的来源。在原子精度下对贵金属和金属氧化物之间的相互作用有深入的理解，从而精确评估它们对催化的贡献，可以作为催化剂设计的基本原则。近年来，原则上可被视为原子精密金属氧化物簇的多金属氧酸盐 （POM） 已被证明对贵金属具有很强的亲和力，从而形成了多种 POM-贵金属杂化簇。它们分辨良好的原子精确结构和混合性质使它们成为了解贵金属和金属氧化物之间界面和相互作用的理想平台。本文根据杂化团簇的不同构型将金属-金属氧化物界面分为不同的类别，旨在了解POMs与贵金属在原子精度上的界面结构和电子相关性。基于这些基本理解，该研究提供了关于未来挑战和研究工作的观点。