Приказ основних података о документу

dc.creatorŠtrbac, Svetlana
dc.creatorBehm, Rolf Jürgen
dc.creatorCrown, Alechia
dc.creatorWiȩckowski, Andrzej
dc.date.accessioned2021-03-10T10:07:56Z
dc.date.available2021-03-10T10:07:56Z
dc.date.issued2002
dc.identifier.issn0039-6028
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/4340
dc.description.abstractSpontaneous deposition of ruthenium on Au(1 1 1) surfaces from 1.0 mM RuCl3 + 0.5 M H2SO4 (or 0.1 M HClO4) solutions was investigated by in situ STM and cyclic voltammetry, focusing on the morphology of the resulting submonolayer Ru modified surfaces. STM results show a pronounced step decoration, indicating that the steps are active sites for the nucleation of Ru monolayer islands, while a random distribution of Ru nuclei is observed on terraces. During deposition, the open circuit potential rapidly increases from 0.38 to above 0.72 V vs. (Ag/AgCl). Experiments with different deposition times show that deposition from sulfuric acid solution saturates after 3 min deposition, the island size reaches its saturation value of 2.8 nm after 1 min. Significantly higher deposition activities and saturation coverages are found for deposition from perchlorate solution and for deposition on highly stepped surfaces/surface areas, indicative of a pronounced anion effect and reflecting the higher activity of steps for Ru deposition, respectively. In both cases, in particular for deposition in perchlorate solution, islands grow to multilayer heights and assume hexagonal shapes. Finally it is shown that multiple deposition can be utilized to reach higher coverages, attaining step saturation also in sulfuric acid solution. The Ru modified Au(1 1 1) electrode was found to be inert for hydrogen adsorption, and the electrochemical results indicate that the ruthenium islands inhibit long-range ordering of the sulfate adlayer on the substrate.sr
dc.language.isoensr
dc.publisherElseviersr
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/241796/EU//sr
dc.relationThe National Science Foundation grant number Grant CHE- 9985837sr
dc.relationThe Department of Energy Grant under DEFG02-96ER45439sr
dc.rightsrestrictedAccesssr
dc.sourceSurface Sciencesr
dc.subjectGoldsr
dc.subjectGrowthsr
dc.subjectNucleationsr
dc.subjectRutheniumsr
dc.subjectScanning tunneling microscopysr
dc.titleIn situ STM imaging of spontaneously deposited ruthenium on Au(111)sr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractШтрбац, Светлана; Бехм, Ролф Јüрген; Цроwн, Aлецхиа; Wиȩцкоwски, Aндрзеј;
dc.citation.volume517
dc.citation.issue1-3
dc.citation.spage207
dc.citation.epage218
dc.citation.rankM21
dc.identifier.doi10.1016/S0039-6028(02)02062-9
dc.identifier.scopus2-s2.0-0036783904
dc.type.versionpublishedVersionsr


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Приказ основних података о документу