Enhanced photocurrent of a ZnO nanorod array sensitized with graphene quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (73) ◽  
pp. 59204-59207 ◽  
Author(s):  
Bingjun Yang ◽  
Jiangtao Chen ◽  
Linfan Cui ◽  
Wenwen Liu
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Graphene Quantum Dots ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Interfacial Charge Transfer ◽  
Zno Nanorod Array ◽  
Interfacial Charge ◽  
Sensitization Effect

GQDs have a remarkable sensitization effect on the photocurrent of ZNRA, which is due to the interfacial charge transfer.

Interfacial Charge Transfer between CdTe Quantum Dots and Gram Negative Vs Gram Positive Bacteria

2010 ◽  
Vol 44 (4) ◽  
pp. 1464-1470 ◽  
Author(s):  
Eve Dumas ◽  
Cherry Gao ◽  
Diana Suffern ◽  
Stephen E. Bradforth ◽  
Nada M. Dimitrijevic ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Cdte Quantum Dots ◽  
Gram Positive ◽  
Interfacial Charge Transfer ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Interfacial Charge

Optimization of Ag2S Quantum Dots Decorated ZnO Nanorod Array Photoanodes for Enhanced Photoelectrochemical Performances

2021 ◽  
Author(s):  
Daniel Solís ◽  
Francisco de Paula Martín Jiménez ◽  
Guillermo Jauregui ◽  
Daniel Gau ◽  
Javier Pereyra ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Zno Nanorod Array ◽  
Ag2s Quantum Dots

scholarly journals Facet-Dependent Interfacial Charge Transfer in TiO2/Nitrogen-Doped Graphene Quantum Dots Heterojunctions for Visible-Light Driven Photocatalysis

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 345 ◽  
Author(s):  
Ou ◽  
Li ◽  
Lyu ◽  
Gui ◽  
Sun ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Graphene Quantum Dots ◽  
Anatase Tio2 ◽  
Charge Carriers ◽  
Acceptor Interaction ◽  
Nitrogen Doped ◽  
Donor Acceptor ◽  
Interfacial Charge

Interfacial charge transfer is crucial in the efficient conversion of solar energy into fuels and electricity. In this paper, heterojunction composites were fabricated, comprised of anatase TiO2 with different percentages of exposed {101} and {001} facets and nitrogen-doped quantum dots (NGQDs) to enhance the transfer efficiency of photo-excited charge carriers. The photocatalytic performances of all samples were evaluated for RhB degradation under visible light irradiation, and the hybrid containing TiO2 with 56% {001} facets demonstrated the best photocatalytic activity. The excellent photoactivity of TiO2/NGQDs was owed to the synergistic effects of the following factors: (i) The unique chemical features of NGQDs endowed NGQDs with high electronic conductivities and provided its direct contact with the TiO2 surface via forming Ti–O–C chemical bonds. (ii) The co-exposed {101} and {001} facets were beneficial for the separation and transfer of charge carriers in anatase TiO2. (iii) The donor-acceptor interaction between NGQDs and electron-rich {101} facets of TiO2 could remarkably enhance the photocurrent, thus hindering the charge carriers recombination rate. Extensive characterization of their physiochemical properties further showed the synergistic effect of facet-manipulated electron-hole separation in TiO2 and donor-acceptor interaction in graphene quantum dots (GQDs)/TiO2 on photocatalytic activity.

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