0000000000419713

AUTHOR

Geniece L. Hallett-tapley

showing 3 related works from this author

Gold nanoparticle catalysis of the cis-trans isomerization of azobenzene

2013

Ablated, “pseudo-naked” gold nanoparticles (AuNPs) catalyze the cis–trans isomerization of substituted azobenzenes. para-Substitution was found to affect the rate of isomerization, suggesting the participation of AuNP-mediated electron transfer in the isomerization mechanism. Fil: Hallet Tapley, Geniece. University of Ottawa; Canadá Fil: D'Alfonso, Claudio. University of Ottawa; Canadá. Universita Di Roma; Italia Fil: Pacioni, Natalia Lorena. University of Ottawa; Canadá Fil: McTiernan, Cristopher D.. University of Ottawa; Canadá Fil: Gonzalez Bejar, Maria. University of Ottawa; Canadá. Universidad de Valencia; España Fil: Lanzalunga, Osvaldo. Universita Di Roma; Italia Fil: Alarcon, Emilio…

NanoparticleNANOCATALYSIS010402 general chemistryPhotochemistry01 natural sciencesCatalysisCatalysisElectron transferchemistry.chemical_compoundMaterials ChemistryGOLDISOMERIZATION010405 organic chemistryChemistryOtras Ciencias QuímicasCiencias QuímicasMetals and AlloysGeneral ChemistryCis trans isomerization0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsAZOBENZENESAzobenzeneColloidal goldCeramics and CompositesIsomerizationCIENCIAS NATURALES Y EXACTAS
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Rapid one-pot propargylamine synthesis by plasmon mediated catalysis with gold nanoparticles on ZnO under ambient conditions

2013

Surface plasmon excitation of gold nanoparticles on ZnO in the presence of an aldehyde, an amine and phenylacetylene led to rapid and selective formation of propargylamines with good yields (50-95%) at room temperature. Plasmon mediated catalysis is the best available route for this ternary coupling.

Materials scienceMetal Nanoparticles010402 general chemistryPhotochemistry01 natural sciencesAldehydeCatalysisCatalysischemistry.chemical_compoundMaterials ChemistrySurface plasmon excitationAminesPlasmonchemistry.chemical_classificationAldehydesPropylamines010405 organic chemistryTemperatureMetals and AlloysGeneral Chemistry0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsPargylinechemistryPhenylacetyleneColloidal goldAlkynesCeramics and CompositesAmine gas treatingGoldZinc OxideTernary operationChemical Communications
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Insights into the Mechanism of Cumene Peroxidation Using Supported Gold and Silver Nanoparticles

2013

Due to the considerable industrial implications, an in-depth study of cumene peroxidation using supported gold and silver nanoparticles was carried out to gain more insight into the mechanism of this reaction. Supported gold nanoparticles were found to efficiently catalyze the decomposition of cumene hydroperoxide with a selectivity of 25% at 80 °C when using gold supported on hydrotalcite (AuNP@HT), and 2-phenyl-2-propanol (i.e., cumyl alcohol) was the main product. Further, silver nanoparticles supported on hydrotalcite (AgNP@HT) converted cumene to cumene hydroperoxide at 80 °C with 80% selectivity. Both benchtop and oxygen-uptake experiments were used to probe the reaction mechanism and…

CumeneReaction mechanismHydrotalcite010405 organic chemistryChemistryGeneral Chemistry010402 general chemistryPhotochemistry01 natural sciencesCatalysisSilver nanoparticle0104 chemical sciences3. Good healthCatalysischemistry.chemical_compoundCumene hydroperoxideColloidal goldSelectivityACS Catalysis
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