About: In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer

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About: In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer Goto Sponge Distinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1021/ja408506y
Description	Active catalytic sites have traditionally been analyzed based on static representations of surface structures and characterization of materials before or after reactions. We show here by a combination of in situ microscopy and spectroscopy techniques that, in the presence of reactants, an oxide catalyst's chemical state and morphology are dynamically modified. The reduction of Cu2O films is studied under ambient pressures (AP) of CO. The use of complementary techniques allows us to identify intermediate surface oxide phases and determine how reaction fronts propagate across the surface by massive mass transfer of Cu atoms released during the reduction of the oxide phase in the presence of CO. High resolution in situ imaging by AP scanning tunneling microscopy (AP-STM) shows that the reduction of the oxide films is initiated at defects both on step edges and the center of oxide terraces. Active catalytic sites have traditionally been analyzed based on static representations of surface structures and characterization of materials before or after reactions. We show here by a combination of in situ microscopy and spectroscopy techniques that, in the presence of reactants, an oxide catalyst's chemical state and morphology are dynamically modified. The reduction of Cu2O films is studied under ambient pressures (AP) of CO. The use of complementary techniques allows us to identify intermediate surface oxide phases and determine how reaction fronts propagate across the surface by massive mass transfer of Cu atoms released during the reduction of the oxide phase in the presence of CO. High resolution in situ imaging by AP scanning tunneling microscopy (AP-STM) shows that the reduction of the oxide films is initiated at defects both on step edges and the center of oxide terraces. (en)
Title	In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer (en)
skos:prefLabel	In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer (en)
skos:notation	RIV/00216208:11320/13:10191891!RIV14-MSM-11320___
http://linked.open...avai/predkladatel	Matematicko-fyzikální fakulta
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(LH11017)
http://linked.open...iv/cisloPeriodika	45
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Dvořák, Filip Matolín, Vladimír
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	79386
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10191891
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	copper; cu(111); oxide; surface science; methanol synthesis; co oxidation; oxygen-induced reconstructions; ray photoelectron-spectroscopy; scanning-tunneling-microscopy; gas shift reaction (en)
http://linked.open.../riv/klicoveSlovo	ray photoelectron-spectroscopy copper methanol synthesis oxygen-induced reconstructions surface science oxide gas shift reaction scanning-tunneling-microscopy cu(111) co oxidation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[376B23FF0225]
http://linked.open...i/riv/nazevZdroje	Journal of the American Chemical Society
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	12 (xsd:int)
http://linked.open...vavai/riv/projekt	Investigation of Catalytic Processes using Inverse Model Catalysts
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	135
http://linked.open...iv/tvurceVysledku	Dvořák, Filip Matolín, Vladimír Baber, Ashleigh E. Mudiyanselage, Kumudu Rodriguez, Jose A. Sadowski, Jerzy T. Senanayake, Sanjaya D. Soldemo, Markus Stacchiola, Dario J. Weissenrieder, Jonas White, Michael G. Xu, Fang
http://linked.open...ain/vavai/riv/wos	000327103600010
issn	0002-7863
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/ja408506y
http://localhost/t...ganizacniJednotka	11320

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