scholarly journals Significant Fatigue Life Enhancement in Multiscale Doubly-Modified Fiber/Epoxy Nanocomposites with Graphene Nanoplatelets and Reduced-Graphene Oxide

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2135
Author(s):  
Mohammad Rafiee ◽  
Somayeh Hosseini Rad ◽  
Fred Nitzsche ◽  
Jeremy Laliberte ◽  
Michel R. Labrosse
Keyword(s):  
Graphene Oxide ◽  
Fatigue Life ◽  
Reduced Graphene Oxide ◽  
Composite Laminates ◽  
Fatigue Behavior ◽  
Cost Effective ◽  
Mechanical Analysis ◽  
Graphene Nanoplatelets ◽  
Experimental Results ◽  
Reduced Graphene

We report the fatigue behavior of a novel multiscale fiberglass/epoxy composite modified with reduced-graphene oxide (rGO) and graphene nanoplatelets (GNP). A novel and cost-effective fabrication method based on vacuum assisted resin transfer molding (VARTM) method was used for manufacturing the composite laminates. Morphological and mechanical analysis of composites showed a successful dispersion of nano-fillers and a remarkable improvement in fatigue life of the nanocomposites. The experimental results revealed that all rGO concentrations resulted in a significant increase in fatigue life of the nanocomposites. These enhancements can be explained by the creation of stronger links between the nanoparticles fiberglass and epoxy. The experimental results also showed that lower concentrations of GNPs lead to an increase in fatigue life of nanocomposites; however, a decrease in their fatigue life can be seen at higher loadings.

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.

scholarly journals Graphene nanoplatelets and reduced graphene oxide elevate the microalgal cytotoxicity of nano-zirconium oxide

Chemosphere ◽  
2021 ◽  
Vol 276 ◽  
pp. 130015
Author(s):  
Zhuang Wang ◽  
Fan Zhang ◽  
Martina G. Vijver ◽  
Willie J.G.M. Peijnenburg
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zirconium Oxide ◽  
Graphene Nanoplatelets ◽  
Reduced Graphene

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.

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.

Potentiometric Taste Sensing Using Reduced Graphene Oxide Screen Printed Electrodes

2020 ◽  
Vol 18 (12) ◽  
pp. 881-888
Author(s):  
Anil B. Patil ◽  
Umesh. J. Tupe ◽  
Vikas V. Deshmane ◽  
Arun V. Patil
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Principal Component ◽  
Experimental Results ◽  
Statistical Tool ◽  
Sensing Applications ◽  
Screen Printed Electrodes ◽  
Reduced Graphene ◽  
Pharmaceutical Industries ◽  
Screen Printed

This paper reports the development of simple and economical reduced graphene oxide (rGO) based screen-printed electrodes (SPE) for five basic taste sensing applications. Twenty different test solutions for the five tastes of salty, sour, sweet, umami, and bitter at 1 ppm, 10 ppm, 100 ppm, 1000 ppm concentration levels were tested with the fabricated SPEs. From experimental results, electrical signals generated between the electrode and test solution interface were measured using the potentiometric method. Satisfactory potentiometric responses of SPEs to different ppm concentrations for each sample were used to analyze the sample data. Histogram using the statistical tool was used to analyze the changes in the conductivity response. A multivariate Principal Component Analysis (PCA) statistical tool correlated using loading plots between variables and factors of all the five basic tastes. The plot showed the interrelation between variables and test samples. The obtained experimental results from these rGO based SPEs make them suitable for their use in taste sensing applications such as for any taste disorder disability, food-producing industry, pharmaceutical industries, etc.

Fabrication of a novel disposable glucose biosensor using an electrochemically reduced graphene oxide–glucose oxidase biocomposite

2016 ◽  
Vol 8 (38) ◽  
pp. 6974-6981 ◽  
Author(s):  
Kathiresan Vijayaraj ◽  
Suck Won Hong ◽  
Sung-Ho Jin ◽  
Seung-Cheol Chang ◽  
Deog-Su Park
Keyword(s):  
Graphene Oxide ◽  
Glucose Oxidase ◽  
Reduced Graphene Oxide ◽  
Electrochemical Method ◽  
Graphite Electrode ◽  
Cost Effective ◽  
Glucose Biosensor ◽  
Pencil Graphite Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

A disposable glucose biosensor has been fabricated on the surface of a cost-effective pencil graphite electrode (PGE) by an electrochemical method, using glucose oxidase (GOx) and reduced graphene oxide (rGO).

Cost-effective and facile development of Fe3O4–reduced graphene oxide electrodes for supercapacitors

2015 ◽  
Vol 30 (sup3) ◽  
pp. 144-149 ◽  
Author(s):  
W. Ullah ◽  
A. W. Anwar ◽  
A. Majeed ◽  
A. Sharif ◽  
Rehana Sharif ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cost Effective ◽  
Oxide Electrodes ◽  
Reduced Graphene ◽  
Electrodes For Supercapacitors
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