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

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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 ; Zeng, J
	2018
Source Publication	NANO LETTERS
ISSN	1530-6984
Volume	18 Issue:6 Pages:3785-3791
Subtype	期刊论文
Abstract	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.
Keyword	Density-functional Theory Metal-organic Frameworks Chemoselective Hydrogenation Platinum Nanoparticles Au-25 Nanoclusters Co2 Hydrogenation Pd Nitrobenzene Carbon Hydroformylation
DOI	10.1021/acs.nanolett.8b01059
Indexed By	SCI
Language	英语
WOS ID	WOS:000435524300067
Citation statistics	Cited Times:8[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/29115
Collection	中科院上海应用物理研究所2011-2018年
Affiliation	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 11.Zeng, J
Recommended Citation 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.

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