Plasmonic Copper-activated ZnO Microarrays for Efficient Photoelectrocatalytic Applications.
Chem Asian J
; 18(3): e202201155, 2023 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-36519348
ABSTRACT
In the present work, green synthesized plasmonic copper nanostructures derived from carbon quantum dots (PCQDs) activated ZnO microarrays (MAs) based catalyst system is developed and studied for photocatalytic activity and photoelectrocatalytic water splitting. CQDs are synthesized from pharmaceutical waste and used as a reducing agent to synthesize PCQDs of an average size of 10±2â
nm. PCQDs decorated ZnO (PCQDs/ZnO) MAs exhibited enhanced photocurrent density of â¼7.1â
mA/cm2 at 1.23â
V (vs. RHE), which is â¼11 fold to ZnO MAs alone (0.65â
mA/cm2 ). The catalyst exhibits an ABPE of 1.07% at 0.7â
V (vs. RHE), IPEC of 8.8% for 450â
nm, and hydrogen production rate of 435â
µmol/h. The enhanced PEC characteristics are assigned to the improved photons collection and better charge transfer for their participation in oxidation/reduction reaction. The same is well supported with DFT studies for the PCQDs/ZnO MAs catalyst for the first time.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Chem Asian J
Ano de publicação:
2023
Tipo de documento:
Article