Doping MoS2 with Graphene Quantum Dots: Structural and Electrical Engineering towards Enhanced Electrochemical Hydrogen Evolution

2016 ◽  
Vol 211 ◽  
pp. 603-610 ◽  
Author(s):  
Jinxue Guo ◽  
Haifeng Zhu ◽  
Yanfang Sun ◽  
Lin Tang ◽  
Xiao Zhang
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Electrical Engineering ◽  
Graphene Quantum Dots

Unraveling the Hydrogen Evolution Reaction Active Sites in N-Functionalized Interconnected Graphene Quantum Dots

2017 ◽  
Vol 2 (16) ◽  
pp. 4511-4515 ◽  
Author(s):  
Sumana Kundu ◽  
Bibhudatta Malik ◽  
Deepak K. Pattanayak ◽  
Ragupathy Pitchai ◽  
Vijayamohanan K. Pillai
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Graphene Quantum Dots

Fabrication of Nitrogen-Doped Graphene Quantum Dots-Cu2O Catalysts for Enhanced Photocatalytic Hydrogen Evolution

NANO ◽  
2018 ◽  
Vol 13 (08) ◽  
pp. 1850099 ◽  
Author(s):  
Yilin Wu ◽  
Ming Yan ◽  
Jia Gao ◽  
Peng Lv ◽  
Xinlin Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Graphene Quantum Dots ◽  
Photocatalytic Property ◽  
Photogenerated Electron ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Pure Cu

Development of efficient visible light driven photocatalysts for water splitting has attracted great research interest. Herein, a novel H2-producing nitrogen-doped graphene quantum dots (NGQDs)-Cu2O was successfully constructed and synthesized. The as-prepared NGQDs-Cu2O photocatalysts were benefited for light harvesting and charge separation and showed highly efficient photocatalytic property for hydrogen production by water splitting. Results displayed that the amount of NGQDs exhibited significant influence for H2 production, and the optimum sample of 3%NGQDs-Cu2O performed the highest hydrogen-evolution rate of 22.6[Formula: see text][Formula: see text]mol h[Formula: see text] g[Formula: see text], which was about 2 times higher than that of the pure Cu2O (10.1[Formula: see text][Formula: see text]mol h[Formula: see text] g[Formula: see text]). By further study, the enhanced photocatalytic performance could be ascribed to the crucial role of NGQDs, which widely improve the separation of photogenerated electron-hole pair’s.

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