Intermetallic Pd–Sn Nanoparticles on Supports with High Metal Loading Facilitated by the Metal–Metal Bond for High-Performance Cooperative Catalysis,Inorganic Chemistry

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Intermetallic Pd–Sn Nanoparticles on Supports with High Metal Loading Facilitated by the Metal–Metal Bond for High-Performance Cooperative Catalysis
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-06-01 , DOI: 10.1021/acs.inorgchem.3c00886
Amishwar Raysing Shelte _{1,

2} , Sanjay Pratihar _{1,

2}

Affiliation

Atomically monodispersed intermetallic catalysts comprising highly accessible active sites are ideal heterogeneous catalytic materials. Designing such types of nanocatalysts on carbonaceous supports with high loading, however, remains a formidable challenge. Demonstrated herein is an effective synthetic strategy to produce highly dispersed intermetallic Pd–Sn nanoparticles on various supports with high catalyst loading (upto 24 wt % Pd and 18 wt % Sn) using a discrete bimetallic Pd–Sn complex, which in turn is highly superior as compared to conventionally used methods using individual metal salts. Synergistic cooperative interaction between sub-5 nm Pd-rich particles, supports, and large intermetallic Pd–Sn particles allowed their electronic cross-talk, displaying a much higher reaction efficiency with an entirely different selectivity toward a product, which is highly unlikely in the case of comparable individual components or sequentially impregnated bimetallic materials involving in a catalytic/photocatalytic dehydrogenation, hydrogenation, tandem (de)hydrogenation, and amidation reaction. The designed synthetic strategy has the potential to contribute to the development of atomically monodispersed intermetallic high-loading functional materials for advanced electro- and photocatalytic applications.

中文翻译：

金属间 Pd-Sn 纳米颗粒负载在高金属载量的载体上，金属-金属键促进高性能协同催化

包含高度可及活性位点的原子单分散金属间化合物催化剂是理想的多相催化材料。然而，在高负载碳质载体上设计此类纳米催化剂仍然是一项艰巨的挑战。本文展示了一种有效的合成策略，使用离散的双金属 Pd-Sn 络合物在具有高催化剂负载量（高达 24 wt% Pd 和 18 wt% Sn）的各种载体上生产高度分散的金属间 Pd-Sn 纳米粒子，这反过来非常优越与使用单独金属盐的常规方法相比。亚 5 nm 富 Pd 颗粒、载体和大金属间 Pd-Sn 颗粒之间的协同合作相互作用允许它们的电子串扰，显示出更高的反应效率和对产品的完全不同的选择性，这在可比较的单个组件或涉及催化/光催化脱氢、氢化、串联（脱）氢和酰胺化反应的顺序浸渍双金属材料的情况下是极不可能的. 所设计的合成策略有可能有助于开发用于高级电催化和光催化应用的原子级单分散金属间化合物高负载功能材料。

更新日期：2023-06-01

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