Interfacial design of gold/silver core-shell nanostars for plasmon-enhanced photocatalytic coupling of 4-aminothiophenol

Simple item page
dc.contributor.authorKaur, Gagandeep
dc.contributor.authorTanwar, Swati
dc.contributor.authorKaur, Vishaldeep
dc.contributor.authorBiswas, Rathindranath
dc.contributor.authorSaini, Sangeeta
dc.contributor.authorHaldar, Krishna Kanta
dc.contributor.authorSen, Tapasi
dc.date.accessioned2024-01-21T10:32:57Z
dc.date.accessioned2024-08-13T11:16:40Z
dc.date.available2024-01-21T10:32:57Z
dc.date.available2024-08-13T11:16:40Z
dc.date.issued2021-10-02T00:00:00
dc.description.abstractChemical reactions under mild conditions mediated by localized surface plasmon resonance (LSPR) of metals have emerged as a functional research field. In the present study, we report an interfacial designing procedure for the fabrication of a class of bimetallic hybrid nanomaterials as a profoundly active photocatalyst for the conversion of para-aminothiophenol (PATP) into 4,4?-dimercaptoazobenzene. For this purpose, core-shell nanostars composed of gold (core) and silver (shell) (Au/Ag NSs) were utilized as both surface-enhanced Raman scattering substrate and plasmon driven catalyst under 532 nm laser excitation. Au/Ag NSs with sharp tips display excellent surface-enhanced Raman scattering (SERS) efficiency of PATP. Employing the SERS study, it has been found that PATP rapidly converts into its dimerized product DMAB within few seconds by surface photochemical reaction in the Au-Ag heterojunction of core-shell nanostars. Au/Ag NSs with multiple sharp tips exhibit intense LSPR and highly strong electric fields are created at the tips, which enables the generation of hot electrons responsible for the rapid conversion reaction. Such well-designed interfacial bimetallic nanostars could have potential applications in surface enhanced spectroscopy, biosensing, and photoinduced surface catalysis. This journal is � The Royal Society of Chemistry.en_US
dc.identifier.doi10.1039/d1tc03733a
dc.identifier.issn20507534
dc.identifier.urihttp://10.2.3.109/handle/32116/3222
dc.identifier.urlhttp://xlink.rsc.org/?DOI=D1TC03733A
dc.language.isoen_USen_US
dc.publisherRoyal Society of Chemistryen_US
dc.subjectBinary alloysen_US
dc.subjectDesignen_US
dc.subjectElectric fieldsen_US
dc.subjectGolden_US
dc.subjectHeterojunctionsen_US
dc.subjectHot electronsen_US
dc.subjectLaser excitationen_US
dc.subjectNanorodsen_US
dc.subjectRaman scatteringen_US
dc.subjectSilver alloysen_US
dc.subjectSubstratesen_US
dc.subjectSurface plasmon resonanceen_US
dc.subjectSurface reactionsen_US
dc.subjectSurface scatteringen_US
dc.subjectBimetallicsen_US
dc.subjectCore shellen_US
dc.subjectEnhanced Raman scatteringen_US
dc.subjectInterfacial designen_US
dc.subjectLocalized surface plasmon resonanceen_US
dc.subjectNanostaren_US
dc.subjectPhoto-catalyticen_US
dc.subjectSharp tipen_US
dc.subjectSilver coresen_US
dc.subjectSurface enhanced Ramanen_US
dc.subjectShells (structures)en_US
dc.titleInterfacial design of gold/silver core-shell nanostars for plasmon-enhanced photocatalytic coupling of 4-aminothiophenolen_US
dc.title.journalJournal of Materials Chemistry Cen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

Files

Collections

Chemistry - Research Publications