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He J, Hu H, Xue H, Tang Y, Li X, Xue R, Chi L, Zhang H. Unveiling the Role of Pyridinic Nitrogen and Diacetylene in the Hydrogen Evolution Reaction through Model Catalysts Prepared by On-Surface Reactions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:51301-51308. [PMID: 39279490 DOI: 10.1021/acsami.4c09256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
Metal-free carbon materials (MFCMs) have extensive applications in electrocatalysis because of their comparable catalytic activity to that of Pt/C in some cases. Understanding the structure-property relationship is crucial for the reasonable design of more efficient catalysts. To reveal the structure-property relationship of the hydrogen evolution reaction (HER), we prepared nanowire model catalysts on single-crystalline Au(111) electrodes through state-of-the-art on-surface synthesis. Temperature-dependent experiments were conducted to evaluate the HER activity of the nanoribbons functionalized with pyridinic nitrogen and diacetylene. According to our electrochemical results (overpotential, current density j0, and apparent activation energy), we demonstrate that the participation of diacetylene can promote the catalytic reaction for the HER through a synergistic effect. Based on the analysis of the activation entropy for the model catalysts, we attribute the synergistic effect of diacetylene groups to the large area of π···H-O bonding in the electric double layer, thus providing direct insight into the structural-property relationship of polymerized nanoribbons for the HER through the rational design of precursor structures. The nanoribbons prepared by on-surface synthesis can serve as prototype systems for model catalytic research on MFCMs.
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Affiliation(s)
- Jing He
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Hao Hu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Huimin Xue
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Yanning Tang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Xuechao Li
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Renjie Xue
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Lifeng Chi
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Haiming Zhang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
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Hu J, Wang H, Liang Z, Zhang H, Huang C, Xie L, Li Z, Jiang Z, Huang H, Song F. Tuning Dehalogenative Coupling of Br 2Py on Bimetallic Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13392-13400. [PMID: 36279423 DOI: 10.1021/acs.langmuir.2c01640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Considerable attention has been paid to on-surface Ullmann coupling during the past decade owing to the feasible synthesis of artificial nanostructures. While previous reports mainly concentrated on coupling reactions on single-metal-atom surfaces, herein we present the Ullmann coupling of 2,7-dibromopyrene (Br2Py) on bimetallic surfaces, Bi-Ag(111) and Bi-Au(111), respectively, with scanning tunneling microscopy (STM) and X-ray photoemission spectroscopy (XPS). On the Bi-decorated Ag(111), self-assembly of intact Br2Py is realized due to the reduced activity at the interface. Subsequent annealing promotes the dehalogenation of Br2Py on Bi-Ag(111), while Bi adatoms do not bring any visible influence on coupling reactions. Furthermore, post-deposition of Bi onto preassembled nanostructures on Ag(111) immediately initiates the Ullmann coupling by inducing more Ag adatoms available on the surface, while stepwise annealing afterward leads to complete polymerization and formation of covalent chains with lateral displacement compared to that on the bare Ag(111), probably due to the space hindrance and confinement. For Bi-Au(111) with the modified reconstruction, higher-temperature annealing is required to trigger Ullmann coupling compared to that on Au(111). The exception is that the C-C coupling reaction remains impervious to Bi adatoms, and recovery of the Bi-Au reconstruction is realized after intensive annealing. In principle, bimetallic surfaces herein present intriguing behavior toward the controllable Ullmann coupling, and this report might provide different insights into the comprehensive atomistic elucidation of reaction mechanisms as well as the design of a new platform to effectively regulate Ullmann coupling.
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Affiliation(s)
- Jinping Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
| | - Hongbing Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
| | - Zhaofeng Liang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Huan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
| | - Chaoqin Huang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
| | - Lei Xie
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Zheshen Li
- ISA, Department of Physics and Astronomy, University of Aarhus, Aarhus, 8000C, Denmark
| | - Zheng Jiang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Han Huang
- School of Physics and Electronics, Central South University, Changsha, 410012, China
| | - Fei Song
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- University of Chinese Academy Sciences, 101000, Beijing, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
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