Vliv velikosti částic na elektrokatalytickou aktivitu nanokrystalických RuO2 elektrod

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F06%3A00032534" target="_blank" >RIV/61388955:_____/06:00032534 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Particle size dependence of the electrocatalytic activity of nanocrystalline RuO2 electrodes

Popis výsledku v původním jazyce

The effect of nanocrystal size/shape on the electrocatalytic behavior of nanocrystalline oxide electrodes was demonstrated on electrodes based on sol-gel-prepared RuO2 materials. The typical particle size ranged between 15 and 40 nm. Regardless of the particle size, the nanocrystals were of isometric shape with polygonal prismatic part capped with two pyramids. The prismatic part of the nanocrystals featured {110}- and {100}-oriented faces in the case of small nanocrystals (d < 20 nm) and {110}, {100} and {140} in the case of bigger nanocrystals (d > 20 nm). The pyramidal parts were formed by {101}-oriented faces. The activity of the RuO2 nanocrystals towards oxygen evolution reaction decreases with increasing particle size; the activity towards chlorine evolution is insensitive to the particle size/shape. The observed tendency indicates that the oxygen evolution is significantly affected by the crystal edges while chlorine evolution reaction proceeds mainly on crystal faces.

Název v anglickém jazyce

Particle size dependence of the electrocatalytic activity of nanocrystalline RuO2 electrodes

Popis výsledku anglicky

The effect of nanocrystal size/shape on the electrocatalytic behavior of nanocrystalline oxide electrodes was demonstrated on electrodes based on sol-gel-prepared RuO2 materials. The typical particle size ranged between 15 and 40 nm. Regardless of the particle size, the nanocrystals were of isometric shape with polygonal prismatic part capped with two pyramids. The prismatic part of the nanocrystals featured {110}- and {100}-oriented faces in the case of small nanocrystals (d < 20 nm) and {110}, {100} and {140} in the case of bigger nanocrystals (d > 20 nm). The pyramidal parts were formed by {101}-oriented faces. The activity of the RuO2 nanocrystals towards oxygen evolution reaction decreases with increasing particle size; the activity towards chlorine evolution is insensitive to the particle size/shape. The observed tendency indicates that the oxygen evolution is significantly affected by the crystal edges while chlorine evolution reaction proceeds mainly on crystal faces.

Druh

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

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/1ET400400413" target="_blank" >1ET400400413: Vývoj programového prostředí pro matematické simulace a predikce v katalýze a elektrokatalýze</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Journal of the Electrochemical Society

ISSN

0013-4651

e-ISSN

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Svazek periodika

153

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"E111"-"E118"

Kód UT WoS článku

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EID výsledku v databázi Scopus

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