Atomic Replacement of PtNi Nanoalloys within Zn-ZIF-8 for the Fabrication of a Multisite CO2Reduction Electrocatalyst
文献类型：期刊论文
| 作者 | Wang, Xiaolu; Fu, Ninghua; Liu, Jin-Cheng; Yu, Ke; Li, Zhi,; Xu, Zhongfei; Liang, Xiao; Zhu, Peng ; Ye, Chenliang; Zhou, Awu
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| 刊名 | Journal of the American Chemical Society
 |
| 出版日期 | 2022 |
| 卷号 | 144期号:50页码:23223-23229 |
| ISSN号 | 00027863 |
| DOI | 10.1021/jacs.2c11497 |
| 文献子类 | Article |
| 英文摘要 | Exploring the transformation/interconversion pathways of catalytic active metal species (single atoms, clusters, nanoparticles) on a support is crucial for the fabrication of high-efficiency catalysts, the investigation of how catalysts are deactivated, and the regeneration of spent catalysts. Sintering and redispersion represent the two main transformation modes for metal active components in heterogeneous catalysts. Herein, we established a novel solid-state atomic replacement transformation for metal catalysts, through which metal atoms exchanged between single atoms and nanoalloys to form a new set of nanoalloys and single atoms. Specifically, we found that the Ni of the PtNi nanoalloy and the Zn of the ZIF-8-derived Zn1on nitrogen-doped carbon (Zn1-CN) experienced metal interchange to produce PtZn nanocrystals and Ni single atoms (Ni1-CN) at high temperature. The elemental migration and chemical bond evolution during the atomic replacement displayed a Ni and Zn mutual migration feature. Density functional theory calculations revealed that the atomic replacement was realized by endothermically stretching Zn from the CN support into the nanoalloy and exothermically trapping Ni with defects on the CN support. Owing to the synergistic effect of the PtZn nanocrystal and Ni1-CN, the obtained (PtZn)n/Ni1-CN multisite catalyst showed a lower energy barrier of CO2protonation and CO desorption than that of the reference catalysts in the CO2reduction reaction (CO2RR), resulting in a much enhanced CO2RR catalytic performance. This unique atomic replacement transformation was also applicable to other metal alloys such as PtPd. © 2022 American Chemical Society. All rights reserved. |
| 电子版国际标准刊号 | 15205126 |
| 语种 | 英语 |
| WOS记录号 | WOS:000895426200001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299817]  |
| 专题 | 高能物理研究所_东莞分部 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 | Wang, Xiaolu,Fu, Ninghua,Liu, Jin-Cheng,et al. Atomic Replacement of PtNi Nanoalloys within Zn-ZIF-8 for the Fabrication of a Multisite CO2Reduction Electrocatalyst[J]. Journal of the American Chemical Society,2022,144(50):23223-23229. |
| APA | Wang, Xiaolu.,Fu, Ninghua.,Liu, Jin-Cheng.,Yu, Ke.,Li, Zhi,.,...&Li, Yadong,,.(2022).Atomic Replacement of PtNi Nanoalloys within Zn-ZIF-8 for the Fabrication of a Multisite CO2Reduction Electrocatalyst.Journal of the American Chemical Society,144(50),23223-23229. |
| MLA | Wang, Xiaolu,et al."Atomic Replacement of PtNi Nanoalloys within Zn-ZIF-8 for the Fabrication of a Multisite CO2Reduction Electrocatalyst".Journal of the American Chemical Society 144.50(2022):23223-23229. |
入库方式： OAI收割
来源：高能物理研究所
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