Pt Single Atoms Embedded in the Surface of Ni Nanocrystals as Highly Active Catalysts for Selective Hydrogenation of Nitro Compounds

doi:10.1021/acs.nanolett.8b01059

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	Pt Single Atoms Embedded in the Surface of Ni Nanocrystals as Highly Active Catalysts for Selective Hydrogenation of Nitro Compounds
	Peng, YH ; Geng, ZG ; Zhao, ST ; Wang, LB ; Li, HL ; Wang, X ; Zheng, XS ; Zhu, JF ; Li, ZY ; Si, R
刊名	NANO LETTERS
	2018
卷号	18 期号:6 页码:3785-3791
关键词	Density-functional Theory Metal-organic Frameworks Chemoselective Hydrogenation Platinum Nanoparticles Au-25 Nanoclusters Co2 Hydrogenation Pd Nitrobenzene Carbon Hydroformylation
ISSN号	1530-6984
DOI	10.1021/acs.nanolett.8b01059
文献子类	期刊论文
英文摘要	Single-atom catalysts exhibit high selectivity in hydrogenation due to their isolated active sites, which ensure uniform adsorption configurations of substrate molecules. Compared with the achievement in catalytic selectivity, there is still a long way to go in exploiting the catalytic activity of single-atom catalysts. Herein, we developed highly active and selective catalysts in selective hydrogenation by embedding Pt single atoms in the surface of Ni nanocrystals (denoted as Pt-1/Ni nanocrystals). During the hydrogenation of 3-nitrostyrene, the TOF numbers based on surface Pt atoms of Pt-1/Ni nanocrystals reached similar to 1800 h(-1) under 3 atm of H-2 at 40 degrees C, much higher than that of Pt single atoms supported on active carbon, TiO2 , SiO2 , and ZSM-S. Mechanistic studies reveal that the remarkable activity of Pt-1/Ni nanocrystals derived from sufficient hydrogen supply because of spontaneous dissociation of H-2 on both Pt and Ni atoms as well as facile diffusion of H atoms on Pt-1/Ni nanocrystals. Moreover, the ensemble composed of the Pt single atom and nearby Ni atoms in Pt-1/Ni nanocrystals leads to the adsorption configuration of 3-nitrostyrene favorable for the activation of nitro groups, accounting for the high selectivity for 3-vinylaniline.
语种	英语
WOS记录号	WOS:000435524300067
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/29115]
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
作者单位	1.Peng, YH 2.Geng, ZG 3.Zhao, ST 4.Wang, LB 5.Li, HL 6.Wang, X 7.Zheng, XS 8.Zhu, JF 9.Li, ZY 10.Si, R
推荐引用方式 GB/T 7714	Peng, YH,Geng, ZG,Zhao, ST,et al. Pt Single Atoms Embedded in the Surface of Ni Nanocrystals as Highly Active Catalysts for Selective Hydrogenation of Nitro Compounds[J]. NANO LETTERS,2018,18(6):3785-3791.
APA	Peng, YH.,Geng, ZG.,Zhao, ST.,Wang, LB.,Li, HL.,...&Zeng, J.(2018).Pt Single Atoms Embedded in the Surface of Ni Nanocrystals as Highly Active Catalysts for Selective Hydrogenation of Nitro Compounds.NANO LETTERS,18(6),3785-3791.
MLA	Peng, YH,et al."Pt Single Atoms Embedded in the Surface of Ni Nanocrystals as Highly Active Catalysts for Selective Hydrogenation of Nitro Compounds".NANO LETTERS 18.6(2018):3785-3791.