Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles | |
| Gao, DF; Zhou, H; Cai, F; Wang, DN; Hu, YF; Jiang, B; Cai, WB; Chen, XQ; Si, R; Yang, F; Miao, S; Wang, JG; Wang, GX; Bao, XH | |
| 2017 | |
| Source Publication | NANO RESEARCH
 |
| ISSN | 1998-0124 |
| Volume | 10Issue:6Pages:2181-2191 |
| Subtype | 期刊论文 |
| Abstract | 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. |
| Keyword | Carbon-dioxide Electroreduction Pd Nanoparticles Active Phase Selectivity Fluctuation |
| DOI | 10.1007/s12274-017-1514-6 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000401320700030 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/27464 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Recommended Citation 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. |
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| Switchable CO2 elect（2273KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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