Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition

doi:10.1002/smll.201700648

	Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition
	Gong, M; Shi, L; Cao, K; Chu, SQ; Shan, B; Chu SQ(储胜启); Lang, Y; Liu, X; Cai, JM; Chen, R
刊名	SMALL
	2017
卷号	13 期号:32 页码:1700648
ISSN号	1613-6810
DOI	10.1002/smll.201700648
文献子类	Article
英文摘要	A facet-selective atomic layer deposition method is developed to fabricate oxide nanofence structure to stabilize Pt nanoparticles. CeOx is selectively deposited on Pt nanoparticles' (111) facets and naturally exposes Pt (100) facets. The facet selectivity is realized through different binding energies of Ce precursor fragments chemisorbed on Pt (111) and Pt (100), which is supported by in situ mass gain experiment and corroborated by density functional theory simulations. Such nanofence structure not only has exposed Pt active facets for carbon monoxide oxidation but also forms ceria-metal interfaces that are beneficial for activity enhancement. The composite catalysts show excellent sintering resistance up to 700 degrees C calcination. CeOx anchors Pt nanoparticles with a strong metal oxide interaction, and nanofence structure around Pt nanoparticles provides physical blocking that suppresses particles migration. The study reveals that forming oxide nanofence structure to encapsulate precious metal nanoparticles is an effective way to simultaneously enhance catalytic activity and thermal stability.
电子版国际标准刊号	1613-6829
WOS关键词	CORE-SHELL NANOPARTICLES ; SINGLE-ATOM ; METAL NANOPARTICLES ; SUPPORT INTERACTION ; OXYGEN REDUCTION ; CERIA CATALYSTS ; MODEL CATALYSTS ; OXIDATION ; PD ; HYDROGENATION
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000408012900001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285146]
专题	高能物理研究所_多学科研究中心高能物理研究所_粒子天体物理中心高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Gong, M,Shi, L,Cao, K,et al. Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition[J]. SMALL,2017,13(32):1700648.
APA	Gong, M.,Shi, L.,Cao, K.,Chu, SQ.,Shan, B.,...&Chen, R.(2017).Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition.SMALL,13(32),1700648.
MLA	Gong, M,et al."Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition".SMALL 13.32(2017):1700648.