Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles
文献类型：期刊论文
| 作者 | Gao, DF; Zhou, H; Cai, F; Wang, DN; Hu, YF; Jiang, B; Cai, WB; Chen, XQ; Si, R; Yang, F |
| 刊名 | NANO RESEARCH
 |
| 出版日期 | 2017 |
| 卷号 | 10期号:6页码:2181-2191 |
| 关键词 | Carbon-dioxide Electroreduction Pd Nanoparticles Active Phase Selectivity Fluctuation |
| ISSN号 | 1998-0124 |
| DOI | 10.1007/s12274-017-1514-6 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Active-phase engineering is regularly utilized to tune the selectivity of metal nanoparticles (NPs) in heterogeneous catalysis. However, the lack of understanding of the active phase in electrocatalysis has hampered the development of efficient catalysts for CO2 electroreduction. Herein, we report the systematic engineering of active phases of Pd NPs, which are exploited to select reaction pathways for CO2 electroreduction. In situ X-ray absorption spectroscopy, in situ attenuated total reflection-infrared spectroscopy, and density functional theory calculations suggest that the formation of a hydrogen-adsorbed Pd surface on a mixture of the a-and a-phases of a palladium-hydride core (alpha+beta PdHx@PdHx) above -0.2 V (vs. a reversible hydrogen electrode) facilitates formate production via the HCOO* intermediate, whereas the formation of a metallic Pd surface on the a-phase Pd hydride core (beta PdHx@Pd) below -0.5 V promotes CO production via the COOH* intermediate. The main product, which is either formate or CO, can be selectively produced with high Faradaic efficiencies (> 90%) and mass activities in the potential window of 0.05 to -0.9 V with scalable application demonstration. |
| 语种 | 英语 |
| WOS记录号 | WOS:000401320700030 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27464]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Gao, DF,Zhou, H,Cai, F,et al. Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles[J]. NANO RESEARCH,2017,10(6):2181-2191. |
| APA | Gao, DF.,Zhou, H.,Cai, F.,Wang, DN.,Hu, YF.,...&Bao, XH.(2017).Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles.NANO RESEARCH,10(6),2181-2191. |
| MLA | Gao, DF,et al."Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles".NANO RESEARCH 10.6(2017):2181-2191. |
入库方式： OAI收割
来源：上海应用物理研究所
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