Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles

doi:10.1007/s12274-017-1514-6

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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
发表期刊	NANO RESEARCH
ISSN	1998-0124
卷号	10 期号:6 页码:2181-2191
文章类型	期刊论文
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.
关键词	Carbon-dioxide Electroreduction Pd Nanoparticles Active Phase Selectivity Fluctuation
DOI	10.1007/s12274-017-1514-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000401320700030
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/27464
专题	中科院上海应用物理研究所2011-2018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.

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