Evaluation of 3D gold nanodendrite layers obtained by templated galvanic displacement reactions for SERS sensing and heterogeneous catalysis

DC FieldValueLanguage
dc.contributor.authorHan, Weijia
dc.contributor.authorStepula, Elzbieta
dc.contributor.authorPhilippi, Michael
dc.contributor.authorSchluecker, Sebastian
dc.contributor.authorSteinhart, Martin
dc.date.accessioned2021-12-23T16:07:14Z-
dc.date.available2021-12-23T16:07:14Z-
dc.date.issued2018
dc.identifier.issn20403364
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/7781-
dc.description.abstractDense layers of overlapping three-dimensional (3D) gold nanodendrites characterized by high specific surfaces as well as by abundance of sharp edges and vertices creating high densities of SERS hotspots are promising substrates for SERS-based sensing and catalysis. We have evaluated to what extent structural features of 3D gold nanodendrite layers can be optimized by the initiation of 3D gold nanodendrite growth at gold particles rationally positioned on silicon wafers. For this purpose, galvanic displacement reactions yielding 3D gold nanodendrites were guided by hexagonal arrays of parent gold particles with a lattice constant of 1.5 m obtained by solid-state dewetting of gold on topographically patterned silicon wafers. Initiation of the growth of dendritic features at the edges of the gold particles resulted in the formation of 3D gold nanodendrites while limitation of dendritic growth to the substrate plane was prevented. The regular arrangement of the parent gold particles supported the formation of dense layers of overlapping 3D gold nanodendrites that were sufficiently homogeneous within the resolution limits of Raman microscopy. Consequently, SERS mapping experiments revealed a reasonable degree of uniformity. The proposed preparation algorithm comprises only bottom-up process steps that can be carried out without the use of costly instrumentation.
dc.description.sponsorshipEuropean Research Council (ERC-CoG-2014) [646742 INCANA]; The authors thank the European Research Council (ERC-CoG-2014, project 646742 INCANA) for funding.
dc.language.isoen
dc.publisherROYAL SOC CHEMISTRY
dc.relation.ispartofNANOSCALE
dc.subjectALUMINUM FOIL
dc.subjectChemistry
dc.subjectChemistry, Multidisciplinary
dc.subjectDENDRITIC NANOSTRUCTURES
dc.subjectENHANCED RAMAN-SCATTERING
dc.subjectFABRICATION
dc.subjectGROWTH
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectNANOPARTICLES
dc.subjectNanoscience & Nanotechnology
dc.subjectORDERED ARRAYS
dc.subjectPhysics
dc.subjectPhysics, Applied
dc.subjectScience & Technology - Other Topics
dc.subjectSILICON
dc.subjectSILVER ELECTRODE
dc.subjectSPECTROSCOPY
dc.titleEvaluation of 3D gold nanodendrite layers obtained by templated galvanic displacement reactions for SERS sensing and heterogeneous catalysis
dc.typejournal article
dc.identifier.doi10.1039/c8nr07164k
dc.identifier.isiISI:000450442500016
dc.description.volume10
dc.description.issue44
dc.description.startpage20671
dc.description.endpage20680
dc.contributor.orcid0000-0002-5241-8498
dc.contributor.orcid0000-0001-6460-6229
dc.contributor.researcheridB-7811-2011
dc.identifier.eissn20403372
dc.publisher.placeTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
dcterms.isPartOf.abbreviationNanoscale
dcterms.oaStatusGreen Submitted
crisitem.author.orcid0000-0002-5241-8498-
crisitem.author.netidStMa946-
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