The wideand complextunabilityof gold nanoparticles(AuNPs)supportedon nanoporous,semicrystalline,and polymorphicpolymermatricesconsistingof syndiotacticpolystyrene(sPS)ormultiblocksyndiotacticpolystyrene-co-cis-1,4poly(butadiene)(sPSB)is hereindescribedand correlatedwith the performancesin aerobicoxidationof (�)-1-phenylethanol.Impregnationordeposition-impregnationsyntheticmethodsyieldedAuNPsofmiddlesize (10–20nm) on the surfaceof polymergrains.Theco-precipitationmethodleadsto smallAuNPs(4–5 nm) homo-genouslydispersedin the supportwith quantitativeentrapmentof the gold.Thermalor solventannealingaffordedmodifica-tionsof polymercrystallinephaseand AuNPsmorphology.Theannealingwith chloroform/watermixtureincreasesthe crystal-linityof the nanoporousformsand convertscompactγandβphasesintothe nanoporousɛandδphases.The thermaltreatmentof the AuNPs-sPS(B)catalystsafforddefectiveNPswith enhancedcatalyticactivity.The solvent-inducedformationof the nanoporousformsimprovespermeabilityto solventsandreactantsand, in turn,the catalyticproperties.
Synthesis and Tuning of Gold Nanoparticles Supported on Polymorphic Semicrystalline Nanoporous Polymer for Catalytic Aerobic Oxidation of Alcohols
Canton P.Membro del Collaboration Group
;
2022-01-01
Abstract
The wideand complextunabilityof gold nanoparticles(AuNPs)supportedon nanoporous,semicrystalline,and polymorphicpolymermatricesconsistingof syndiotacticpolystyrene(sPS)ormultiblocksyndiotacticpolystyrene-co-cis-1,4poly(butadiene)(sPSB)is hereindescribedand correlatedwith the performancesin aerobicoxidationof (�)-1-phenylethanol.Impregnationordeposition-impregnationsyntheticmethodsyieldedAuNPsofmiddlesize (10–20nm) on the surfaceof polymergrains.Theco-precipitationmethodleadsto smallAuNPs(4–5 nm) homo-genouslydispersedin the supportwith quantitativeentrapmentof the gold.Thermalor solventannealingaffordedmodifica-tionsof polymercrystallinephaseand AuNPsmorphology.Theannealingwith chloroform/watermixtureincreasesthe crystal-linityof the nanoporousformsand convertscompactγandβphasesintothe nanoporousɛandδphases.The thermaltreatmentof the AuNPs-sPS(B)catalystsafforddefectiveNPswith enhancedcatalyticactivity.The solvent-inducedformationof the nanoporousformsimprovespermeabilityto solventsandreactantsand, in turn,the catalyticproperties.
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Eur J Inorg Chem - 2022 - Buonerba - Synthesis and Tuning of Gold Nanoparticles Supported on Polymorphic Semicrystalline.pdf
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