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Remote Synergy between Heterogeneous Single Atoms and Clusters for Enhanced Oxygen Evolution
Nano Letters ( IF 9.6 ) Pub Date : 2023-03-22 , DOI: 10.1021/acs.nanolett.3c00228 Xilan Ding 1 , Chuanyi Jia 2 , Peiyu Ma 1 , Huihuang Chen 3 , Jiawei Xue 1 , Dongdi Wang 1 , Ruyang Wang 1 , Heng Cao 1 , Ming Zuo 3 , Shiming Zhou 3 , Zhirong Zhang 3 , Jie Zeng 3 , Jun Bao 1
Nano Letters ( IF 9.6 ) Pub Date : 2023-03-22 , DOI: 10.1021/acs.nanolett.3c00228 Xilan Ding 1 , Chuanyi Jia 2 , Peiyu Ma 1 , Huihuang Chen 3 , Jiawei Xue 1 , Dongdi Wang 1 , Ruyang Wang 1 , Heng Cao 1 , Ming Zuo 3 , Shiming Zhou 3 , Zhirong Zhang 3 , Jie Zeng 3 , Jun Bao 1
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Integrating single atoms and clusters into one system is a novel strategy to achieve desired catalytic performances. Compared with homogeneous single-atom cluster catalysts, heterogeneous ones combine the merits of different species and therefore show greater potential. However, it is still challenging to construct single-atom cluster systems of heterogeneous species, and the underlying mechanism for activity improvement remains unclear. In this work, we developed a heterogeneous single-atom cluster catalyst (ConIr1/N–C) for efficient oxygen evolution. The Ir single atoms worked in synergy with the Co clusters at a distance of about 8 Å, which optimized the configuration of the key intermediates. Consequently, the oxygen evolution activity was significantly improved on ConIr1/N–C relative to the Co cluster catalyst (Con/N–C), exhibiting an overpotential lower by 107 mV than that of Con/N–C at 10 mA cm–2 and a turnover frequency 50.9 times as much as that of Con/N–C at an overpotential of 300 mV.
中文翻译：
异质单原子和团簇之间的远程协同作用以增强氧气释放
将单个原子和团簇集成到一个系统中是一种实现所需催化性能的新策略。与均相单原子簇催化剂相比，多相催化剂结合了不同物种的优点，因此显示出更大的潜力。然而，构建异构物种的单原子团簇系统仍然具有挑战性，活性提高的潜在机制仍不清楚。在这项工作中，我们开发了一种多相单原子簇催化剂 (Co n Ir 1 /N–C)，用于高效析氧。Ir 单原子与 Co 簇在约 8 Å 的距离处协同作用，优化了关键中间体的构型。因此，Co 的析氧活性显着提高n Ir 1 /N–C 相对于 Co 团簇催化剂 (Co n /N–C)，在 10 mA cm –2时表现出比 Co n /N–C低 107 mV 的过电位和 50.9 倍的周转频率在 300 mV 的过电势下与 Co n /N–C一样多
更新日期：2023-03-22
中文翻译：
异质单原子和团簇之间的远程协同作用以增强氧气释放
将单个原子和团簇集成到一个系统中是一种实现所需催化性能的新策略。与均相单原子簇催化剂相比，多相催化剂结合了不同物种的优点，因此显示出更大的潜力。然而，构建异构物种的单原子团簇系统仍然具有挑战性，活性提高的潜在机制仍不清楚。在这项工作中，我们开发了一种多相单原子簇催化剂 (Co n Ir 1 /N–C)，用于高效析氧。Ir 单原子与 Co 簇在约 8 Å 的距离处协同作用，优化了关键中间体的构型。因此，Co 的析氧活性显着提高n Ir 1 /N–C 相对于 Co 团簇催化剂 (Co n /N–C)，在 10 mA cm –2时表现出比 Co n /N–C低 107 mV 的过电位和 50.9 倍的周转频率在 300 mV 的过电势下与 Co n /N–C一样多
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