Characterization of Nanoporous WO3 Films Grown via Ballistic Deposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130675" target="_blank" >RIV/00216208:11320/12:10130675 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jp3015723" target="_blank" >http://dx.doi.org/10.1021/jp3015723</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp3015723" target="_blank" >10.1021/jp3015723</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Nanoporous WO3 Films Grown via Ballistic Deposition

Popis výsledku v původním jazyce

We report on the preparation and characterization of high surface area, supported nanoporous tungsten oxide films prepared under different conditions on polished polycrystalline Ta and Pt(111) substrates via direct sublimation of monodispersed gas phaseclusters of cyclic (WO3)(3). Scanning electron microscopy and transmission electron microscopy were used to investigate the film morphology on a nanometer scale. The films consist of arrays of separated filaments that are amorphous. The chemical composition and the thermal stability of the films were investigated by means of X-ray photoelectron spectroscopy. The surface area and the distribution of binding sites on the films were measured as functions of growth temperature, deposition angle, and annealing conditions using temperature-programmed desorption of Kr. Films deposited at 20 K and at an incident angle of 65 degrees from the substrate normal display the greatest specific surface area of similar to 560 m(2)/g.

Název v anglickém jazyce

Characterization of Nanoporous WO3 Films Grown via Ballistic Deposition

Popis výsledku anglicky

We report on the preparation and characterization of high surface area, supported nanoporous tungsten oxide films prepared under different conditions on polished polycrystalline Ta and Pt(111) substrates via direct sublimation of monodispersed gas phaseclusters of cyclic (WO3)(3). Scanning electron microscopy and transmission electron microscopy were used to investigate the film morphology on a nanometer scale. The films consist of arrays of separated filaments that are amorphous. The chemical composition and the thermal stability of the films were investigated by means of X-ray photoelectron spectroscopy. The surface area and the distribution of binding sites on the films were measured as functions of growth temperature, deposition angle, and annealing conditions using temperature-programmed desorption of Kr. Films deposited at 20 K and at an incident angle of 65 degrees from the substrate normal display the greatest specific surface area of similar to 560 m(2)/g.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/ME08056" target="_blank" >ME08056: Studium struktury a vlastností monokrystalických povrchů oxidu kovů a tenkých vrstev: modelové katalyzátory.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

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Svazek periodika

116

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

10649-10655

Kód UT WoS článku

000304073700027

EID výsledku v databázi Scopus

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