About: Interaction of niobium with polycrystalline palladium surface. X-ray photoemission study

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Vznik bimetalické fáze niob (Nb) – palladium (Pd) připravené napařováním proměnného množství Nb na vysoce defektní povrch Pd za laboratorní teploty je studován in situ fotoelektronovou spektroskopií (XPS). V oblasti submonovrstevné koncentrace Nb (<1.47 atomů Nb cm-2) vzniká na povrchu Pd dvourozměrná bimetalická fáze. Zvýšením koncentrace nanášeného Nb nad monovrstevné pokrytí dochází k promíchávání napařených atomů Nb s atomy Pd podložky za vzniku homogenní trojrozměrné bimetalické fáze. Tento systém je perspektivní pro přípravu modifikované Pd membrány pro vodíkové separátory a membránové katalyzátory. (cs) Evolution of niobium-palladium (Nb-Pd) interface alloy prepared by in situ Nb deposition on highly defect polycrystalline Pd surface at room temperature has been investigated using X-ray photoelectron spectroscopy (XPS). A two-step growth mode of Nb adlayer has been observed: a two-dimensional (2D)-like growth mode in a submonolayer Nb concentration region and three-dimensional (3D) intermixing of Nb and Pd atoms at Nb loadings above a monolayer coverage. The latter growth mode resulted in appearance of rather homogeneous Nb-Pd alloy phase. This system is prospective for fabrication of modified Pd membrane with enhanced hydrogen permeability and improved mechanical properties. Evolution of niobium-palladium (Nb-Pd) interface alloy prepared by in situ Nb deposition on highly defect polycrystalline Pd surface at room temperature has been investigated using X-ray photoelectron spectroscopy (XPS). A two-step growth mode of Nb adlayer has been observed: a two-dimensional (2D)-like growth mode in a submonolayer Nb concentration region and three-dimensional (3D) intermixing of Nb and Pd atoms at Nb loadings above a monolayer coverage. The latter growth mode resulted in appearance of rather homogeneous Nb-Pd alloy phase. This system is prospective for fabrication of modified Pd membrane with enhanced hydrogen permeability and improved mechanical properties. (en)
Title	Interaction of niobium with polycrystalline palladium surface. X-ray photoemission study Interaction of niobium with polycrystalline palladium surface. X-ray photoemission study (en) Interakce niobu s polykrystalickým povrchem palladia. Studie metodou XPS (cs)
skos:prefLabel	Interaction of niobium with polycrystalline palladium surface. X-ray photoemission study Interaction of niobium with polycrystalline palladium surface. X-ray photoemission study (en) Interakce niobu s polykrystalickým povrchem palladia. Studie metodou XPS (cs)
skos:notation	RIV/61388955:_____/08:00320518!RIV09-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA400400625), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Bastl, Zdeněk Jirka, Ivan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	372816
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/08:00320518
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	interaction; niobium; surfaces (en)
http://linked.open.../riv/klicoveSlovo	interaction niobium surfaces
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[87FB1C219883]
http://linked.open...i/riv/nazevZdroje	Collection of Czechoslovak Chemical Communications
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Preparation and characterization of hydrogen separator based on palladium-niobium alloy supported on polycrystalline compact surface of silicalite 1
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	73
http://linked.open...iv/tvurceVysledku	Bastl, Zdeněk Jirka, Ivan
http://linked.open...ain/vavai/riv/wos	000263121400007
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0010-0765
number of pages	13 (xsd:int)

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