A new mild, clean and highly efficient method for the preparation of graphene quantum dots without by-products

2015 ◽  
Vol 3 (34) ◽  
pp. 6871-6876 ◽  
Author(s):  
Chong Zhu ◽  
Siwei Yang ◽  
Gang Wang ◽  
Runwei Mo ◽  
Peng He ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Quantum Dots ◽  
Graphene Oxide ◽  
Tungsten Oxide ◽  
Hydroxyl Radicals ◽  
Efficient Method ◽  
Graphene Quantum Dots ◽  
Catalytic Decomposition ◽  
Highly Efficient ◽  
By Products

We demonstrated that graphene oxide can be oxidized and cut into graphene quantum dots by hydroxyl radicals which is obtained by catalytic decomposition of hydrogen peroxide with a tungsten oxide nanowire catalyst.

NiAg-graphene quantum dot-graphene hybrid with high oxidase-like catalytic activity for sensitive colorimetric detection of malathion

2021 ◽  
Author(s):  
Xu Dan ◽  
Ruiyi Li ◽  
Qinsheng Wang ◽  
Yongqiang Yang ◽  
Haiyan Zhu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Quantum Dot ◽  
Colorimetric Detection ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Graphene Quantum Dot ◽  
Nickel Silver

The paper reports the synthesis of nickel-silver-graphene quantum dot-graphene hybrid. Histidine-functionalized graphene quantum dots (His-GQDs) were bonded to graphene oxide (GO) and then combined with Ni2+ and Ag+ to form...

scholarly journals Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

2021 ◽  
Vol 73 ◽  
pp. 105519
Author(s):  
Yuxin Yan ◽  
Sivakumar Manickam ◽  
Edward Lester ◽  
Tao Wu ◽  
Cheng Heng Pang
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Ultrasound Assisted

Electrochemical Trimming of Graphene Oxide Affords Graphene Quantum Dots for Fe3+ Detection

2021 ◽  
Author(s):  
Ruibin Qiang ◽  
Weiming Sun ◽  
Kaiming Hou ◽  
Zhangpeng Li ◽  
Jinyun Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Graphene Quantum Dots

scholarly journals Composites of Graphene Quantum Dots and Reduced Graphene Oxide as Catalysts for Nitroarene Reduction

ACS Omega ◽  
2017 ◽  
Vol 2 (10) ◽  
pp. 7293-7298 ◽  
Author(s):  
Jiali Zhang ◽  
Fangwei Zhang ◽  
Yaoyao Yang ◽  
Shouwu Guo ◽  
Jingyan Zhang
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Reduced Graphene ◽  
Nitroarene Reduction

Facile and simultaneous synthesis of graphene quantum dots and reduced graphene oxide for bio-imaging and supercapacitor applications

2016 ◽  
Vol 40 (11) ◽  
pp. 9111-9124 ◽  
Author(s):  
A. Muthurasu ◽  
P. Dhandapani ◽  
V. Ganesh
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Reduced Graphene ◽  
Bio Imaging ◽  
Simultaneous Synthesis ◽  
Supercapacitor Applications

A simple and facile method for the simultaneous preparation of graphene quantum dots (GQDs) having different emission colours, viz., yellow, green and blue, and reduced graphene oxide (RGO) utilized respectively for bio-imaging and supercapacitor applications is demonstrated.

Synthesis, Photoluminescence and Bio-Targeting Applications of Blue Graphene Quantum Dots

2016 ◽  
Vol 16 (4) ◽  
pp. 3457-3467 ◽  
Author(s):  
Jigang Wang ◽  
Ji Zhou ◽  
Wenhua Zhou ◽  
Jilong Shi ◽  
Lun Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Sodium Hydroxide ◽  
Heating Temperature ◽  
Thin Sheet ◽  
Graphene Quantum Dots ◽  
Photoluminescence Intensity ◽  
Cytotoxic Effects ◽  
Different Temperatures ◽  
Blue Photoluminescence

Chemical derived graphene oxide, an atomically thin sheet of graphite with two-dimensional construction, offers interesting physical, electronic, thermal, chemical, and mechanical properties that are currently being explored for advanced physics electronics, membranes, and composites. Herein, we study graphene quantum dots (GQD) with the blue photoluminescence under various parameters. The GQD samples were prepared at different temperatures, and the blue photoluminescence intensity of the solution improved radically as the heating temperatures increased. Concerning PL peak and intensity of the quantum dots, the results demonstrated dependence on time under heating, temperature of heating, and pH adjusted by the addition of sodium hydroxide. After hydrothermal synthesis routes, the functional groups of graphene oxide were altered the morphology showed the stacking configuration, and self-assembled structure of the graphene sheets with obvious wrinkles appeared at the edge structures. In addition, absorption, PL, and PLE spectra of the graphene quantum dots increase with different quantities of sodium hydroxide added. Finally, using GQD to target PNTIA cells was carried out successfully. High uptake efficiency and no cytotoxic effects indicate graphene quantum dots can be suitable for bio-targeting.

Colorimetric detection of cholesterol based on highly efficient peroxidase mimetic activity of graphene quantum dots

2015 ◽  
Vol 218 ◽  
pp. 42-50 ◽  
Author(s):  
Narsingh R. Nirala ◽  
Shiju Abraham ◽  
Vinod Kumar ◽  
Anushka Bansal ◽  
Anchal Srivastava ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Colorimetric Detection ◽  
Graphene Quantum Dots ◽  
Highly Efficient ◽  
Peroxidase Mimetic
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