Nanoscale Assembly of BiVO4/CdS/CoOx Core-Shell Heterojunction for Enhanced Photoelectrochemical Water Splitting
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247717" target="_blank" >RIV/61989100:27640/21:10247717 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989592:15640/21:73610980
Výsledek na webu
<a href="https://www.mdpi.com/2073-4344/11/6/682" target="_blank" >https://www.mdpi.com/2073-4344/11/6/682</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/catal11060682" target="_blank" >10.3390/catal11060682</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Nanoscale Assembly of BiVO4/CdS/CoOx Core-Shell Heterojunction for Enhanced Photoelectrochemical Water Splitting
Popis výsledku v původním jazyce
Porous BiVO4 electrodes were conformally decorated with CdS via a chemical bath deposition process. The highest photocurrent at 1.1 V vs. RHE was achieved for a BiVO4/CdS composite (4.54 mA cm(-2)), compared with CdS (1.19 mA cm(-2)) and bare BiVO4 (2.1 mA cm(-2)), under AM 1.5G illumination. This improvement in the photoefficiency can be ascribed to both the enhanced optical absorption properties and the charge separation due to the heterojunction formation between BiVO4 and CdS. Furthermore, the BiVO4/CdS photoanode was protected with a CoOx layer to substantially increase the photostability of the material. The new BiVO4/CdS/CoOx nanostructure exhibited a highly stable photocurrent density of similar to 5 mA cm(-2). The capability to produce O-2 was locally investigated by scanning photoelectrochemical microscope, which showed a good agreement between photocurrent and O-2 reduction current maps. This work develops an efficient route to improve the photo-electrochemical performance of BiVO4 and its long-term stability.
Název v anglickém jazyce
Nanoscale Assembly of BiVO4/CdS/CoOx Core-Shell Heterojunction for Enhanced Photoelectrochemical Water Splitting
Popis výsledku anglicky
Porous BiVO4 electrodes were conformally decorated with CdS via a chemical bath deposition process. The highest photocurrent at 1.1 V vs. RHE was achieved for a BiVO4/CdS composite (4.54 mA cm(-2)), compared with CdS (1.19 mA cm(-2)) and bare BiVO4 (2.1 mA cm(-2)), under AM 1.5G illumination. This improvement in the photoefficiency can be ascribed to both the enhanced optical absorption properties and the charge separation due to the heterojunction formation between BiVO4 and CdS. Furthermore, the BiVO4/CdS photoanode was protected with a CoOx layer to substantially increase the photostability of the material. The new BiVO4/CdS/CoOx nanostructure exhibited a highly stable photocurrent density of similar to 5 mA cm(-2). The capability to produce O-2 was locally investigated by scanning photoelectrochemical microscope, which showed a good agreement between photocurrent and O-2 reduction current maps. This work develops an efficient route to improve the photo-electrochemical performance of BiVO4 and its long-term stability.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10400 - Chemical sciences
Návaznosti výsledku
Projekt
<a href="/cs/project/EF15_003%2F0000416" target="_blank" >EF15_003/0000416: Pokročilé hybridní nanostruktury pro aplikaci v obnovitelných zdrojích energie</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysts
ISSN
2073-4344
e-ISSN
—
Svazek periodika
11
Číslo periodika v rámci svazku
6
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
17
Strana od-do
682
Kód UT WoS článku
000666931300001
EID výsledku v databázi Scopus
2-s2.0-85106557762