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Investigation of the surface chemistry of phosphine-stabilized ruthenium nanoparticles - an advanced solid-state NMR study

Gutmann, T. and Bonnefille, E. and Breitzke, H. and Debouttiere, P. J. and Philippot, K. and Poteau, R. and Buntkowsky, G. and Chaudret, B. (2013):
Investigation of the surface chemistry of phosphine-stabilized ruthenium nanoparticles - an advanced solid-state NMR study.
In: Physical Chemistry Chemical Physics, pp. 17383-17394, 15, (40), [Online-Edition: http://apps.webofknowledge.com/full_record.do?product=WOS&se...],
[Article]

Abstract

31P-13C REDOR NMR measurements allowed a reasonable approximation of distances between stabilizing ligands and carbon monoxide (CO) molecules on the surface of phosphine-stabilized ruthenium nanoparticles (RuNPs). The studied systems are RuNPs in the size range of 1-2 nm stabilized with 1,3,5-triaza-7-phosphaadamantane (PTA) or triphenylphosphine (PPh3) and exposed to a CO atmosphere. This study sheds some light on the interactions between CO and phosphine molecules as well as on their binding geometries on the surface of the RuNPs. As information on the ligand location and mobility is precious for the understanding of the chemical and catalytic properties of nanoparticles, these results support the interest of using sophisticated NMR tools to investigate their surface chemistry.

Item Type: Article
Erschienen: 2013
Creators: Gutmann, T. and Bonnefille, E. and Breitzke, H. and Debouttiere, P. J. and Philippot, K. and Poteau, R. and Buntkowsky, G. and Chaudret, B.
Title: Investigation of the surface chemistry of phosphine-stabilized ruthenium nanoparticles - an advanced solid-state NMR study
Language: English
Abstract:

31P-13C REDOR NMR measurements allowed a reasonable approximation of distances between stabilizing ligands and carbon monoxide (CO) molecules on the surface of phosphine-stabilized ruthenium nanoparticles (RuNPs). The studied systems are RuNPs in the size range of 1-2 nm stabilized with 1,3,5-triaza-7-phosphaadamantane (PTA) or triphenylphosphine (PPh3) and exposed to a CO atmosphere. This study sheds some light on the interactions between CO and phosphine molecules as well as on their binding geometries on the surface of the RuNPs. As information on the ligand location and mobility is precious for the understanding of the chemical and catalytic properties of nanoparticles, these results support the interest of using sophisticated NMR tools to investigate their surface chemistry.

Journal or Publication Title: Physical Chemistry Chemical Physics
Volume: 15
Number: 40
Uncontrolled Keywords: generalized gradient approximation fischer-tropsch synthesis double-resonance nmr gas shift reaction carbon-monoxide metal nanoparticles distance measurements ru nanoparticles redor nmr p-31 nmr
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Physical Chemistry
Date Deposited: 27 Oct 2014 20:40
Official URL: http://apps.webofknowledge.com/full_record.do?product=WOS&se...
Additional Information:

231EX Times Cited:1 Cited References Count:102

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