Self-propagated combustion synthesis of few-layered graphene: an optical properties perspective

Nanoscale ◽  
2018 ◽  
Vol 10 (16) ◽  
pp. 7581-7588 ◽  
Author(s):  
Manonmani Mohandoss ◽  
Soujit Sen Gupta ◽  
Ramesh Kumar ◽  
Md Rabiul Islam ◽  
Anirban Som ◽  
...  
Keyword(s):  
Optical Properties ◽  
Graphene Oxide ◽  
Combustion Synthesis ◽  
Reduced Graphene Oxide ◽  
Cost Effective ◽  
Effective Strategy ◽  
Cost Effective Strategy ◽  
Reduced Graphene

This paper describes a labour-efficient and cost-effective strategy to prepare few-layered reduced graphene oxide like sheets from graphite.

scholarly journals Paper-based potentiometric sensing devices modified with chemically reduced graphene oxide (CRGO) for trace level determination of pholcodine (opiate derivative drug)

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12227-12234
Author(s):  
Hisham S. M. Abd-Rabboh ◽  
Abd El-Galil E. Amr ◽  
Elsayed A. Elsayed ◽  
Ahmed Y. A. Sayed ◽  
Ayman H. Kamel
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cost Effective ◽  
Trace Level ◽  
Ion Sensing ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Trace Level Determination ◽  
Analytical Device

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized.

Tuning the cationic ratio of Fe1CoxNiyP integrated on Vertically aligned reduced graphene oxide array via electroless plating as efficient self-supported bifunctional electrocatalyst for water splitting

2021 ◽  
pp. 1-33
Author(s):  
Kaiming Guo ◽  
Firdoz Shaik ◽  
Jine Yang ◽  
Bin Jiang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Electroless Plating ◽  
Cost Effective ◽  
Bifunctional Electrocatalyst ◽  
Reduced Graphene ◽  
Wide Ph Range ◽  
Vertically Aligned ◽  
Ph Range

Abstract Water splitting is considered as a potential sustainable and green technology for producing mass hydrogen and oxygen. A cost-effective self-supported stable electrocatalyst with excellent electrocatalytic performance in a wide pH range is greatly required for water splitting. This work reports on the synthesis and anchoring of Fe1CoxNiyP nanoparticles on vertically aligned reduced graphene oxide array (VrGO) via electroless plating. The catalytic activity of Fe1CoxNiyP nanoparticles is tuned finely by tailoring the cationic ratio of Co and Ni. Fe1Co2Ni1P/VrGO exhibits the lowest overpotential (58 and 110 mV) at 10 mA cm−2 and lowest tafel slope (31 and 33 mV dec−1) for hydrogen evolution reaction in 1.0 M KOH and 0.5 M H2SO4 respectively. Fe1Co1Ni2P/VrGO exhibits the lowest overpotential (173 mV) at 10 mA cm−2 with lowest tafel slope (47 mV dec-1) for oxygen evolution reaction. The enhanced performance of the electrocatalyst is attributed to improved electrical conductivity, synergistic effects and beneficial electronic states caused by the appropriate atomic ratio of Co and Ni in the bifunctional electrocatalyst. This study helps to explore the effect of variable cationic ratio in the cost-effective ternary iron group metal phosphides electrocatalysts to achieve enhanced electrocatalytic performance for water splitting in a wide pH range.

Electrical and optical properties of reduced graphene oxide thin film deposited onto polyethylene terephthalate by spin coating technique

2017 ◽  
Vol 56 (28) ◽  
pp. 7774 ◽  
Author(s):  
Harry Anderson Rivera Tito ◽  
Anne Habermehl ◽  
Christian Müller ◽  
Sebastian Beck ◽  
Carlos Romero Nieto ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Polyethylene Terephthalate ◽  
Spin Coating ◽  
Oxide Thin Film ◽  
Electrical And Optical Properties ◽  
Coating Technique ◽  
Reduced Graphene

Combustion synthesis of CdS/reduced graphene oxide composites and their photocatalytic properties

2014 ◽  
Vol 57 ◽  
pp. 29-34 ◽  
Author(s):  
Jianxiu Liu ◽  
Xipeng Pu ◽  
Dafeng Zhang ◽  
Hyo Jin Seo ◽  
Kaiping Du ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Combustion Synthesis ◽  
Reduced Graphene Oxide ◽  
Photocatalytic Properties ◽  
Reduced Graphene ◽  
Oxide Composites

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.

Graphite-specific peptide mediated synthesis of Pt nanoparticles on reduced graphene oxide for electrochemical detection of H2O2

2016 ◽  
Vol 09 (03) ◽  
pp. 1650051 ◽  
Author(s):  
Li Wang ◽  
Yantao Sun ◽  
Xiangxin Xue ◽  
Yujing Sun ◽  
Zhuang Li
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrochemical Detection ◽  
Electrocatalytic Activity ◽  
Pt Nanoparticles ◽  
Effective Strategy ◽  
Platinum Nanoparticle ◽  
Reduced Graphene ◽  
First Time ◽  
Specific Peptide

We demonstrate here a facile and effective strategy to prepare reduced graphene oxide-platinum nanoparticle (RGO-PtNP) nanohybrids by the mediation of graphite-specific peptide (GSP). For the first time, we found that GSP can be used to modify RGO non-covalently in one way, and in another way promote the formation of PtNPs on RGO as a biomolecular bridge. The created RGO-PtNP nanohybrids show enhanced electrocatalytic activity toward H2O2 and can be utilized to fabricate non-enzymatic electrochemical H2O2 sensor.

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