Tungsten trioxide film photoanodes prepared by aerosol pyrolysis for photoelectrochemical applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43925581" target="_blank" >RIV/60461373:22310/23:43925581 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0920586122004862?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586122004862?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2022.12.012" target="_blank" >10.1016/j.cattod.2022.12.012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tungsten trioxide film photoanodes prepared by aerosol pyrolysis for photoelectrochemical applications

Popis výsledku v původním jazyce

The present work describes the preparation of tungsten trioxide photoanodes by aerosol pyrolysis on FTO/glass substrates. WO3 layers were characterised by profilometry, XRD, SEM and photoelectrochemistry (linear voltammetry and chronoamperometry under illumination). Optimal deposition conditions to obtain a relatively thick layer were found to be: 11 mm nozzle diameter, 2.5 cm nozzle to substrate distance, and 105 cm/s airflow velocity. A deposition temperature of at least 450 °C was necessary to obtain γ-monoclinic WO3. The as-deposited layers had loose particles on the surface; however, these particles could be removed by scotch tape with no influence on the roughness and photoactivity of the layer. The highest photocurrent was achieved by annealing the layers at 450 °C; however, such layers were not photoelectrochemically stable. To obtain superior long-term stability, an annealing temperature of 550 °C was necessary. The highest, stable photocurrent of ∼ 990 μA/cm2 (E = 0.9 V vs. Ag/AgCl, 1 sun) was achieved for a layer thickness of 3.8 µm.

Název v anglickém jazyce

Tungsten trioxide film photoanodes prepared by aerosol pyrolysis for photoelectrochemical applications

Popis výsledku anglicky

The present work describes the preparation of tungsten trioxide photoanodes by aerosol pyrolysis on FTO/glass substrates. WO3 layers were characterised by profilometry, XRD, SEM and photoelectrochemistry (linear voltammetry and chronoamperometry under illumination). Optimal deposition conditions to obtain a relatively thick layer were found to be: 11 mm nozzle diameter, 2.5 cm nozzle to substrate distance, and 105 cm/s airflow velocity. A deposition temperature of at least 450 °C was necessary to obtain γ-monoclinic WO3. The as-deposited layers had loose particles on the surface; however, these particles could be removed by scotch tape with no influence on the roughness and photoactivity of the layer. The highest photocurrent was achieved by annealing the layers at 450 °C; however, such layers were not photoelectrochemically stable. To obtain superior long-term stability, an annealing temperature of 550 °C was necessary. The highest, stable photocurrent of ∼ 990 μA/cm2 (E = 0.9 V vs. Ag/AgCl, 1 sun) was achieved for a layer thickness of 3.8 µm.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/GA20-11635S" target="_blank" >GA20-11635S: Pokročilé oxidické polovodičové fotoelektrody pro konverzi sluneční energie a úpravu vody</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

CATALYSIS TODAY

ISSN

0920-5861

e-ISSN

1873-4308

Svazek periodika

413-415

Číslo periodika v rámci svazku

113981

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

000955572600001

EID výsledku v databázi Scopus

2-s2.0-85146086264