Maximizing metal utilization by coupling cross-linked PtRu multi-atom on an atomically dispersed ZnFeNC support.
Maximizing metal utilization by coupling cross-linked PtRu multi-atom on an atomically dispersed ZnFeNC support.
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DOI：
10.1039/d1dt01683k
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发表时间：
2021-07
影响因子：
4
通讯作者：
Qiuqun Zhou;Jia Li;Mufei Yue;Meng Wang;Lin Guo;Yan Li;Siguo Chen;Zidong Wei
中科院分区：
文献类型：
--
作者：
Qiuqun Zhou;Jia Li;Mufei Yue;Meng Wang;Lin Guo;Yan Li;Siguo Chen;Zidong Wei
通过将所有金属原子暴露在催化表面上来最小化贵金属（NM）的使用一直是高效NM催化剂开发的长期目标。在此，我们通过Pt-N和Ru-N键将交联的PtRu多原子锚定在原子分散的Zn、Fe和N三掺杂碳纳米材料表面，实现了Pt和Ru原子的充分利用。该负载型PtRu多原子催化剂具有极高的原子效率，并显示出优异的稳定性和对甲醇氧化反应（莫尔）的高活性。密度泛函理论（DFT）计算表明，强耦合Pt-N和Ru-N键是稳定多原子PtRu的关键。
Minimizing noble-metal (NM) usage by exposing all metal atoms on surfaces for catalysis has been a longstanding goal in the development of highly efficient NM catalysts. Here, we realized the full utilization of Pt and Ru atoms by anchoring the cross-linked PtRu multi-atom on the surface of atomically dispersed Zn, Fe and N tri-doped carbon nanomaterials through Pt-N and Ru-N bonds. This supported bimetallic PtRu multi-atom catalyst has extremely high atom efficiency and shows excellent stability and high activity towards the methanol oxidation reaction (MOR). Density functional theory (DFT) calculations reveal that the strongly coupled Pt-N and Ru-N bonds are critical for stabilizing multi-atom PtRu.