The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media
文献类型：期刊论文
| ; | |
| 作者 | Li, Cheng-Fei; Shuai, Ting-Yu; Zheng, Li-Rong ; Tang, Hai-Bo; Zhao, Jia-Wei; Li, Gao-Ren
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
 ; CHEMICAL ENGINEERING JOURNAL
|
| 出版日期 | 2022 ; 2022 |
| 卷号 | 451页码:138618 |
| ISSN号 | 1385-8947 ; 1385-8947 |
| DOI | 10.1016/j.cej.2022.138618 ; 10.1016/j.cej.2022.138618 |
| 文献子类 | Article ; Article |
| 英文摘要 | The M@Ni metal–organic frameworks (MOFs) (M = Ru, Pt, Ir, etc.) have been widely recognized as the outstanding electrocatalysts for hydrogen evolution reaction (HER). However, the mechanism of alkaline HER on M@Ni-MOFs remains ambiguous. Here, taking Ru@Ni-MOFs/NF as an example, its HER synergistic catalytic mechanism has been revealed by in situ FT-IR/Raman spectra, H/D isotope experiments, methanol/SCN− poisoning experiments and DFT calculations. Namely, the carboxylate ligands in Ru@Ni-MOFs/NF, apart from regulating the local electronic structure of surface sites, can be used as a Lewis base that exhibits strong affinity toward H2O via intermediate state of –COO-H-OH and subsequently promotes water transfer/activation/dissociation via the form of –COO–H–O–H-Ru with a low kinetic energy barrier. Ru@Ni-MOFs/NF shows a low overpotential of 25 mV at 10 mA cm−2 with a small Tafel slope (31 mV dec−1) and excellent stability. © 2022; The M@Ni metal–organic frameworks (MOFs) (M = Ru, Pt, Ir, etc.) have been widely recognized as the outstanding electrocatalysts for hydrogen evolution reaction (HER). However, the mechanism of alkaline HER on M@Ni-MOFs remains ambiguous. Here, taking Ru@Ni-MOFs/NF as an example, its HER synergistic catalytic mechanism has been revealed by in situ FT-IR/Raman spectra, H/D isotope experiments, methanol/SCN− poisoning experiments and DFT calculations. Namely, the carboxylate ligands in Ru@Ni-MOFs/NF, apart from regulating the local electronic structure of surface sites, can be used as a Lewis base that exhibits strong affinity toward H2O via intermediate state of –COO-H-OH and subsequently promotes water transfer/activation/dissociation via the form of –COO–H–O–H-Ru with a low kinetic energy barrier. Ru@Ni-MOFs/NF shows a low overpotential of 25 mV at 10 mA cm−2 with a small Tafel slope (31 mV dec−1) and excellent stability. © 2022 |
| 电子版国际标准刊号 | 1873-3212 ; 1873-3212 |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000859318600004 ; WOS:000859318600004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299333]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, Cheng-Fei,Shuai, Ting-Yu,Zheng, Li-Rong,et al. The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media, The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media[J]. CHEMICAL ENGINEERING JOURNAL, CHEMICAL ENGINEERING JOURNAL,2022, 2022,451, 451:138618, 138618. |
| APA | Li, Cheng-Fei,Shuai, Ting-Yu,Zheng, Li-Rong,Tang, Hai-Bo,Zhao, Jia-Wei,&Li, Gao-Ren.(2022).The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media.CHEMICAL ENGINEERING JOURNAL,451,138618. |
| MLA | Li, Cheng-Fei,et al."The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media".CHEMICAL ENGINEERING JOURNAL 451(2022):138618. |
入库方式： OAI收割
来源：高能物理研究所
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