Cu 2 O photocathodes prepared by thermal reduction of CuO: Influence of O 2 concentration on photocurrent stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43931041" target="_blank" >RIV/60461373:22310/24:43931041 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1010603024002570?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1010603024002570?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jphotochem.2024.115713" target="_blank" >10.1016/j.jphotochem.2024.115713</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cu 2 O photocathodes prepared by thermal reduction of CuO: Influence of O 2 concentration on photocurrent stability

Popis výsledku v původním jazyce

Copper oxide (CuO and Cu 2 O) p -type semiconducting photocathodes have gained attention for hydrogen production (proton reduction), due to their appropriate conduction band potentials and light sensitivity in the visible. However, photocorrosion is the main handicap for both compounds. In this work, the transformation of CuO layers deposited via spray pyrolysis on conductive FTO (fluorine doped tin oxide on glass) into Cu 2 O via thermal reduction was studied. Optimal conditions for obtaining Cu 2 O were found by in situ temperaturecontrolled XRD. Synthesis of Cu 2 O films was finally carried out under moderate temperature and vacuum conditions (380 degrees C, 1.10 -2 mbar). The influence of 3 different oxygen concentration in the electrolyte on the stability of the Cu 2 O electrodes under light and electrical bias was studied, and it was found that the O 2 content had a high impact on the photoelectrochemical performance of Cu 2 O electrodes. The stability of the electrodes against selfreduction was demonstrated.

Název v anglickém jazyce

Cu 2 O photocathodes prepared by thermal reduction of CuO: Influence of O 2 concentration on photocurrent stability

Popis výsledku anglicky

Copper oxide (CuO and Cu 2 O) p -type semiconducting photocathodes have gained attention for hydrogen production (proton reduction), due to their appropriate conduction band potentials and light sensitivity in the visible. However, photocorrosion is the main handicap for both compounds. In this work, the transformation of CuO layers deposited via spray pyrolysis on conductive FTO (fluorine doped tin oxide on glass) into Cu 2 O via thermal reduction was studied. Optimal conditions for obtaining Cu 2 O were found by in situ temperaturecontrolled XRD. Synthesis of Cu 2 O films was finally carried out under moderate temperature and vacuum conditions (380 degrees C, 1.10 -2 mbar). The influence of 3 different oxygen concentration in the electrolyte on the stability of the Cu 2 O electrodes under light and electrical bias was studied, and it was found that the O 2 content had a high impact on the photoelectrochemical performance of Cu 2 O electrodes. The stability of the electrodes against selfreduction was demonstrated.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA23-05266S" target="_blank" >GA23-05266S: Studie klíčových faktorů ovlivňujících účinnost fotoelektrochemických cel využívající sluneční světlo pro syntézní reakce a čištění vod</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

ISSN

1010-6030

e-ISSN

1873-2666

Svazek periodika

454

Číslo periodika v rámci svazku

115713

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

001235389600001

EID výsledku v databázi Scopus

2-s2.0-85191298395