Enhanced supercapacitive performance of reduced graphene oxide by incorporating NiCo2O4 quantum dots using aqueous electrolyte

2021 ◽  
pp. 138235
Author(s):  
Poonam Siwatch ◽  
Kriti Sharma ◽  
Navjot Singh ◽  
Nirmal Manyani ◽  
S.K. Tripathi
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Aqueous Electrolyte ◽  
Supercapacitive Performance ◽  
Reduced Graphene

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.

A composite of CoNiP quantum dots decorating reduced graphene oxide as a sulfur host for Li-S batteries

2021 ◽  
Author(s):  
Tingjiao Xiao ◽  
Fengjin Yi ◽  
Mingzhi Yang ◽  
Weiliang Liu ◽  
Mei Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Rate Capability ◽  
Cycling Performance ◽  
Practical Application ◽  
Shuttle Effect ◽  
Reduced Graphene ◽  
Sulfur Host ◽  
Kinetics Of

The “shuttle effect” and sluggish reaction kinetics of lithium polysulfides lead to inferior cycling performance and rate capability of Li-S batteries, which hurdles their practical application. Herein, a composite of...

scholarly journals Enhancement of Molten Nitrate Thermal Properties by Reduced Graphene Oxide and Graphene Quantum Dots

ACS Omega ◽  
2020 ◽  
Vol 5 (34) ◽  
pp. 21345-21354
Author(s):  
Esraa Hamdy ◽  
Laila Saad ◽  
Fuad Abulfotuh ◽  
Moataz Soliman ◽  
Shaker Ebrahim
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Thermal Properties ◽  
Reduced Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Reduced Graphene

Integrating ultrathin and modified NiCoAl-layered double-hydroxide nanosheets with N-doped reduced graphene oxide for high-performance all-solid-state supercapacitors

Nanoscale ◽  
2019 ◽  
Vol 11 (20) ◽  
pp. 9896-9905 ◽  
Author(s):  
Fei Liu ◽  
Yuyun Chen ◽  
Ying Liu ◽  
Jianchun Bao ◽  
Min Han ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
High Performance ◽  
Supercapacitive Performance ◽  
Oxygen Abundance ◽  
Reduced Graphene ◽  
Doped Graphene ◽  
Double Hydroxide

This study reports a novel NiCoAl-LDH/N-doped graphene nanohybrid integrating more oxygen abundance and high conductivity, which exhibits superior supercapacitive performance.

Alcohol dehydration performance of pervaporation composite membranes with reduced graphene oxide and graphene quantum dots homostructured filler

Carbon ◽  
2020 ◽  
Vol 162 ◽  
pp. 318-327 ◽  
Author(s):  
Rumwald Leo G. Lecaros ◽  
Ma. Elizabeth Bismonte ◽  
Bonifacio T. Doma ◽  
Wei-Song Hung ◽  
Chien-Chieh Hu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Composite Membranes ◽  
Alcohol Dehydration ◽  
Reduced Graphene

The Role of Reduced Graphene Oxide Concentration as Ablated Material on Optical Properties of Graphene Quantum Dots

2019 ◽  
Vol 948 ◽  
pp. 267-273 ◽  
Author(s):  
Fiqhri Heda Murdaka ◽  
Ahmad Kusumaatmaja ◽  
Isnaeni ◽  
Iman Santoso
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Oxide ◽  
Band Gap ◽  
Reduced Graphene Oxide ◽  
Optical Band Gap ◽  
Graphene Quantum Dots ◽  
Absorption Peak ◽  
Oxygen Defect ◽  
Reduced Graphene

We report the synthesize of Graphene Quantum Dots (GQDs) using ablation method with reduced Graphene Oxide (rGO) solution as a starting material. We have varied the concentration of rGO as following: 0.5, 2, 5 mg/ml and then have ablated them using 800 nm Ti-Sapphire femtosecond laser to obtain GQDs. From the UV-Vis data, we observed that the more concentration of rGO is being ablated, the more secondary absorption peak at 255.1 nm appeared. This secondary absorption peak is a characteristic of n-π* bonding due to the presence of oxygen defect which occurs as a result of the interaction between the laser and the water in rGO solution. We conclude that the population of oxigen defect in GQDs is increasing, following the increase of rGO concentration and could alter the optical properties of GQD. On the other hand, using Tauc’s plot, we confirm that the increase of rGO concentration as the ablated material does not alter GQDs optical band gap. However, it will slightly reduce both, direct and indirect Oxygen defect related optical band gap.

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