Inhibition of Photoconversion Activity in Self-Assembled ZnO-Graphene Quantum Dots Aggregated by 4-Aminophenol Used as a Linker.
ZnO-graphene core-shell QDs
aggregates
charge separation
photocatalyst
photodetector
solar energy conversion
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
17 Jun 2020
17 Jun 2020
Historique:
received:
19
05
2020
revised:
10
06
2020
accepted:
15
06
2020
entrez:
21
6
2020
pubmed:
21
6
2020
medline:
20
2
2021
Statut:
epublish
Résumé
The aggregation of zinc oxide nanoparticles leads to an increased absorbance in the ultraviolet-visible region by an induced light scattering effect. Herein, we demonstrate the inhibition of photoconversion activity in ZnO-graphene core-shell quantum dots (QD) (ZGQDs) agglomerated by 4-aminophenol (4-AP) used as a linker. The ZnO-graphene quantum dots (QD) aggregates (ZGAs) were synthesized using a facile solvothermal process. The ZGAs revealed an increased absorbance in the wavelengths between 350 and 750 nm as compared with the ZGQDs. Against expectation, the calculated average photoluminescence lifetime of ZGAs was 7.37 ns, which was 4.65 ns longer than that of ZGQDs and was mainly due to the high contribution of a slow (τ
Identifiants
pubmed: 32560497
pii: molecules25122802
doi: 10.3390/molecules25122802
pmc: PMC7355606
pii:
doi:
Substances chimiques
Aminophenols
0
Rhodamines
0
rhodamine B
K7G5SCF8IL
4-aminophenol
R7P8FRP05V
Zinc Oxide
SOI2LOH54Z
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
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