| A hint from phosphine complex: The π back-bonding in cobalt-phosphorene composite enables enhanced electrocatalytic performance |
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| 作者姓名： | Xingyun Li Liangping Xiao Hao Wang Jingting Song Qingchi Xu Meidan Ye Jun Xu |
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| 作者单位： | 1. Shenzhen Research Institute of Xiamen University;2. Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials, Xiamen University;3. Jiujiang Research Institute of Xiamen University;4. Department of Chemistry, National University of Singapore |
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| 基金项目： | the Fundamental Research Funds for the Central Universities(20720220031)；;the 111 Project (B16029)； |
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| 摘 要： | Regulating the electronic structure of the metal electrocatalyst is fundamental for its performance optimizing. The electronic states of the active metal centers are highly dependent on their coordination environment, especially when bonding is formed. The π back-bonding can induce great electron density redistribution around metals, yet it is barely applied in electrocatalyst design. Herein we electrodeposited metallic cobalt on black phosphorus(BP)nanosheets, forming BP-Co with a unique π back...
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| 收稿时间： | 18 November 2022 |
A hint from phosphine complex: The π back-bonding in cobalt-phosphorene composite enables enhanced electrocatalytic performance |
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| Xingyun Li,Liangping Xiao,Hao Wang,Jingting Song,Qingchi Xu,Meidan Ye,Jun Xu.A hint from phosphine complex: The π back-bonding in cobalt-phosphorene composite enables enhanced electrocatalytic performance[J].Progress in Natural Science,2023,33(1):100-107. |
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| Institution: | 1. Shenzhen Research Institute of Xiamen University, Shenzhen, 518057, China;2. Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials, Xiamen University, Xiamen, 361005, Fujian, China;3. Jiujiang Research Institute of Xiamen University, Jiujiang, 332105, China;4. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore |
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| Abstract: | Regulating the electronic structure of the metal electrocatalyst is fundamental for its performance optimizing. The electronic states of the active metal centers are highly dependent on their coordination environment, especially when bonding is formed. The π back-bonding can induce great electron density redistribution around metals, yet it is barely applied in electrocatalyst design. Herein we electrodeposited metallic cobalt on black phosphorus (BP) nanosheets, forming BP-Co with a unique π back-bonding on the interfaces. The BP-Co exhibited high electrocatalytic activity and stability for hydrogen evolution reaction in alkaline electrolyte. The electrochemical and spectroscopic characterizations demonstrated that the BP acted as σ donor and π acceptor to coordinate with electron-rich metallic Co, similar to the phosphine complex. The directional σ bond strengthen the relationship between BP and Co, while the non-directional π bond accelerated the in-plane electron transfer. The π back donation also decreased the oxophilicity of Co to make BP-Co resist the poison from oxygen species. This study can intrigue new thinking prospective for the electrocatalyst design. |
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| Keywords: | Black phosphorus Pi back-bonding Electrocatalyst Electrodeposition Electronic structure |
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