Surface-Bound Ligands Modulate Chemoselectivity and Activity of a Bimetallic Nanoparticle Catalyst

Handle URI:
http://hdl.handle.net/10754/564138
Title:
Surface-Bound Ligands Modulate Chemoselectivity and Activity of a Bimetallic Nanoparticle Catalyst
Authors:
Vu, Khanh B.; Bukhriakov, Konstantin; Anjum, Dalaver H.; Rodionov, Valentin
Abstract:
"Naked" metal nanoparticles (NPs) are thermodynamically and kinetically unstable in solution. Ligands, surfactants, or polymers, which adsorb at a particle's surface, can be used to stabilize NPs; however, such a mode of stabilization is undesirable for catalytic applications because the adsorbates block the surface active sites. The catalytic activity and the stability of NPs are usually inversely correlated. Here, we describe an example of a bimetallic (PtFe) NP catalyst stabilized by carboxylate surface ligands that bind preferentially to one of the metals (Fe). NPs stabilized by fluorous ligands were found to be remarkably competent in catalyzing the hydrogenation of cinnamaldehyde; NPs stabilized by hydrocarbon ligands were significantly less active. The chain length of the fluorous ligands played a key role in determining the chemoselectivity of the FePt NP catalysts. (Chemical Presented). © 2015 American Chemical Society.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs; Chemical Science Program
Publisher:
American Chemical Society (ACS)
Journal:
ACS Catalysis
Issue Date:
3-Apr-2015
DOI:
10.1021/acscatal.5b00262
Type:
Article
ISSN:
21555435
Sponsors:
The authors are grateful to Prof. J.-M. Basset for helpful discussions. This research was supported by King Abdullah University of Science and Technology.
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorVu, Khanh B.en
dc.contributor.authorBukhriakov, Konstantinen
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorRodionov, Valentinen
dc.date.accessioned2015-08-03T12:33:46Zen
dc.date.available2015-08-03T12:33:46Zen
dc.date.issued2015-04-03en
dc.identifier.issn21555435en
dc.identifier.doi10.1021/acscatal.5b00262en
dc.identifier.urihttp://hdl.handle.net/10754/564138en
dc.description.abstract"Naked" metal nanoparticles (NPs) are thermodynamically and kinetically unstable in solution. Ligands, surfactants, or polymers, which adsorb at a particle's surface, can be used to stabilize NPs; however, such a mode of stabilization is undesirable for catalytic applications because the adsorbates block the surface active sites. The catalytic activity and the stability of NPs are usually inversely correlated. Here, we describe an example of a bimetallic (PtFe) NP catalyst stabilized by carboxylate surface ligands that bind preferentially to one of the metals (Fe). NPs stabilized by fluorous ligands were found to be remarkably competent in catalyzing the hydrogenation of cinnamaldehyde; NPs stabilized by hydrocarbon ligands were significantly less active. The chain length of the fluorous ligands played a key role in determining the chemoselectivity of the FePt NP catalysts. (Chemical Presented). © 2015 American Chemical Society.en
dc.description.sponsorshipThe authors are grateful to Prof. J.-M. Basset for helpful discussions. This research was supported by King Abdullah University of Science and Technology.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectBimetallic nanoparticlesen
dc.subjectCinnamaldehydeen
dc.subjectFluorous chemistryen
dc.subjectLigand effectsen
dc.subjectSelective hydrogenationen
dc.titleSurface-Bound Ligands Modulate Chemoselectivity and Activity of a Bimetallic Nanoparticle Catalysten
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.contributor.departmentChemical Science Programen
dc.identifier.journalACS Catalysisen
kaust.authorAnjum, Dalaver H.en
kaust.authorRodionov, Valentinen
kaust.authorVu, Khanh B.en
kaust.authorBukhriakov, Konstantinen
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