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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10191891" target="_blank" >RIV/00216208:11320/13:10191891 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/ja408506y" target="_blank" >http://dx.doi.org/10.1021/ja408506y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/ja408506y" target="_blank" >10.1021/ja408506y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 intermediatesurface 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 intermediatesurface 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/LH11017" target="_blank" >LH11017: Studium katalytických procesů s využitím inversních modelových katalyzátorů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the American Chemical Society

ISSN

0002-7863

e-ISSN

—

Svazek periodika

135

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

16781-16784

Kód UT WoS článku

000327103600010

EID výsledku v databázi Scopus

—