Insight into the formation mechanism of graphene quantum dots and the size effect on their electrochemical behaviors

2015 ◽  
Vol 17 (21) ◽  
pp. 14028-14035 ◽  
Author(s):  
Yonghuan Liu ◽  
Rutao Wang ◽  
Junwei Lang ◽  
Xingbin Yan
Keyword(s):  
Quantum Dots ◽  
Size Effect ◽  
Electrochemical Performance ◽  
Formation Mechanism ◽  
High Power ◽  
Graphene Quantum Dots ◽  
Electrochemical Behaviors ◽  
Power Response ◽  
Insight Into

The formation mechanism of graphene quantum dots was studied, which showed a superior electrochemical performance and an ultra-high power response.

scholarly journals Graphene: Insight into the Cellular Internalization and Cytotoxicity of Graphene Quantum Dots (Adv. Healthcare Mater. 12/2013)

2013 ◽  
Vol 2 (12) ◽  
pp. 1612-1612 ◽  
Author(s):  
Congyu Wu ◽  
Chong Wang ◽  
Ting Han ◽  
Xuejiao Zhou ◽  
Shouwu Guo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Cellular Internalization ◽  
Insight Into

New insight into electrooxidation of graphene into graphene quantum dots

2017 ◽  
Vol 690 ◽  
pp. 129-132 ◽  
Author(s):  
Peihui Luo ◽  
Xiangfeng Guan ◽  
Yunlong Yu ◽  
Xiaoyan Li
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Insight Into

scholarly journals Formation mechanism and optimization of highly luminescent N-doped graphene quantum dots

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Dan Qu ◽  
Min Zheng ◽  
Ligong Zhang ◽  
Haifeng Zhao ◽  
Zhigang Xie ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Formation Mechanism ◽  
Graphene Quantum Dots ◽  
Doped Graphene

Graphene quantum dot induced tunable growth of nanostructured MnCo2O4.5 composites for high-performance supercapacitors

2019 ◽  
Vol 3 (9) ◽  
pp. 2499-2508 ◽  
Author(s):  
Maiwen Zhang ◽  
Wenwen Liu ◽  
Ruilin Liang ◽  
Ricky Tjandra ◽  
Aiping Yu
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Electrochemical Performance ◽  
High Performance ◽  
Graphene Quantum Dots ◽  
Graphene Quantum Dot ◽  
Supercapacitor Applications

A method that adapts graphene quantum dots (GQDs) as structural inducing agents to tune the morphology of MnCo2O4.5/GQDs composites is developed, and utilized to enhance their electrochemical performance for supercapacitor applications.

Electrochemistry and Electrocatalysis of Hemoglobin Based on Graphene Quantum Dots Modified Electrode

2020 ◽  
Vol 16 (3) ◽  
pp. 308-315
Author(s):  
Xiaoyan Li ◽  
Hui Xie ◽  
Guiling Luo ◽  
Yanyan Niu ◽  
Xiaobao Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Modified Electrode ◽  
Electrochemical Impedance ◽  
Ph Value ◽  
Catalytic Reduction ◽  
Graphene Quantum Dots ◽  
Phosphate Buffer Solution ◽  
Buffer Solution ◽  
Detection Range ◽  
Electrochemical Behaviors

Background: Graphene quantum dots (GQD) is a new member of carbon nanomaterial that has attracted increasing attention owing to its better chemical inertness, low cytotoxicity, large specific surface area, cheap cost, suitable conductivity and excellent biocompatibility. Methods: Electrochemical behaviors of this modified electrode were studied by cyclic voltammetry and electrochemical impedance spectroscopy. Electrochemical investigations of Nafion/Hb/GQD/ CILE were carried out with electrochemical parameters calculated. Results: In the phosphate buffer solution with a pH value of 5.0, good linear relationships between the catalytic reduction current and the concentration of substrate were got for TCA (6.0~100.0 mmol·L-1), NaNO2 (2.0~12.0 mmol·L-1) and H2O2 (6.0~30.0 mmol·L-1). The proposed method was applied to NaNO2 concentration detection in soak water from picked vegetables with satisfactory results. Conclusion: This Nafion/Hb/GQD/CILE had a good bioelectrocatalytic activity to different substrates such as trichloroacetic acid, NaNO2 and H2O2 reduction with the advantages including wide detection range, low detection limit and good stability. Therefore, the application of GQD in electrochemical sensor was extended in this paper.

Excitation dependence and independence of photoluminescence in carbon dots and graphene quantum dots: insights into the mechanism of emission

Nanoscale ◽  
2021 ◽  
Author(s):  
Abu Bakar Siddique ◽  
Syed Minhaz Hossain ◽  
Ashit Kumar Pramanick ◽  
Mallar Ray
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Carbon Nanostructures ◽  
Graphene Quantum Dots ◽  
Emission Characteristics ◽  
Emission Mechanism ◽  
Insight Into

A pattern in excitation dependent and independent emission characteristics provides important insight into the emission mechanism from 0D carbon nanostructures.  

Insight into the charge transport correlation in Aux clusters and graphene quantum dots deposited on TiO2 nanotubes for photoelectrochemical oxygen evolution

2018 ◽  
Vol 6 (24) ◽  
pp. 11154-11162 ◽  
Author(s):  
Zhiping Zeng ◽  
Yu-Bing Li ◽  
Shufen Chen ◽  
Peng Chen ◽  
Fang-Xing Xiao
Keyword(s):  
Quantum Dots ◽  
Charge Transport ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Tio2 Nanotubes ◽  
Graphene Quantum Dots ◽  
Gold Nanoclusters ◽  
Intrinsic Correlation ◽  
Induced Charge ◽  
Insight Into

The intrinsic correlation of gold nanoclusters with graphene quantum dots in terms of photo-induced charge transport for photoelectrochemical water splitting was revealed.

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