Hydraulic power and electric field combined antifouling effect of a novel conductive poly(aminoanthraquinone)/reduced graphene oxide nanohybrid blended PVDF ultrafiltration membrane

2015 ◽  
Vol 3 (40) ◽  
pp. 20277-20287 ◽  
Author(s):  
Haiyan Liu ◽  
Guoquan Zhang ◽  
Chuanqi Zhao ◽  
Jiadong Liu ◽  
Fenglin Yang
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
External Electric Field ◽  
Ultrafiltration Membrane ◽  
Hydraulic Power ◽  
Pvdf Membrane ◽  
Reduced Graphene

A novel conductive PDAAQ/rGO nanohybrid blended PVDF membrane exhibited superior antifouling performance under an appropriate external electric field.

Performance improvement of reduced graphene oxide blended PVDF ultrafiltration membrane

2021 ◽  
Vol 230 ◽  
pp. 184-192
Author(s):  
Khira Zlaoui ◽  
Asma Rhimi ◽  
Dorra Jellouli Ennigrou ◽  
Karima Horchani Naifer
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Performance Improvement ◽  
Ultrafiltration Membrane ◽  
Reduced Graphene

Reduced Graphene Oxide for Room Temperature Hydrogen Storage Application

2015 ◽  
Vol 1086 ◽  
pp. 91-95 ◽  
Author(s):  
A. Venkatesan ◽  
Raj Nanalal Patel ◽  
E.S. Kannan
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Hydrogen Storage ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Structural Defects ◽  
Back Gate ◽  
Hot Air ◽  
Reduced Graphene ◽  
P Type

Graphene oxide (GO) is extracted from graphite oxide synthesized using modified Hummers method. The extracted GO solution is then drop casted onto a p type silicon substrate and dried in hot air oven. The dried solution is annealed at a temperature of about 200 degree Celsius for about one hour to obtain thermally reduced graphene oxide (RGO). Such thermally synthesized RGO usually have a lot of structural defects which can act as a binding site for hydrogen. The binding efficiency of hydrogen to defect centers can be increased by applying electric field to RGO as it changes the carrier concentration (doping) on the surface. This induces more polarization in the hydrogen molecule resulting in strong binding force, thereby increasing its hydrogen storage efficiency. In our experiment we have demonstrated room temperature electric field doping in RGO films by modulating the channel current by changing the back gate voltage which is a precursor for employing RGO in hydrogen storage applications.KeywordsGraphene oxide, Reduced graphene oxide, Field effect, Hydrogen storage, and Defects

Electric field-induced nanopatterning of reduced graphene oxide on Si and a p–n diode junction

2011 ◽  
Vol 21 (15) ◽  
pp. 5805 ◽  
Author(s):  
Sohyeon Seo ◽  
Changhua Jin ◽  
Young Rae Jang ◽  
Junghyun Lee ◽  
Seong Kyu Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

scholarly journals Gas sensors based on dielectrophoresis of graphene, and graphene oxide, and reduced graphene oxide A Review

2020 ◽  
Author(s):  
shamim Azimi
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
Electric Fields ◽  
Surrounding Medium ◽  
Diagnostic Technique ◽  
Environmental Research ◽  
Label Free ◽  
Reduced Graphene ◽  
Electrode Edge

Dielectrophoresis (DEP) is a label-free, accurate, fast, and low-cost diagnostic technique that uses the principles of polarization and the motion of bioparticles in applied electric fields. DEP occurs when uncharged particles in the solution are subject to a spatially non-uniform alternating-current (AC) electric field, resulting in the motion of particles by creating a polarizability gradient between the particles and the suspending medium. The movement of particles in DEP is based on the difference in polarizability between the particles and the surrounding medium. If the particles move toward the electrode edge, the region of high electric field gradient, the response is called positive DEP (p-DEP). At the same time, if the particles move away from the electrode edge, the response is called negative DEP (n-DEP). This phenomenon provides a powerful and versatile tool for the non-destructive manipulation of nanoscale materials, allowing for the control of the resistance and the type of the assembly. This technique has been proven to be beneficial in various fields, including environmental research, polymer research, sensors, biosensors, microfluidics, medicine, and diagnostics. This paper reviews the fundamentals of DEP and its specific application in the incorporation of graphene, graphene oxide(GO), and reduced graphene oxide(RGO), enabling the assembly of individual two-dimensional nanostructures at predefined locations in microdevices for gas sensor applications. The review provides an essential framework for parallel fabrication approaches of graphene-based devices.

Electric Field-Induced Ordering of Reduced Graphene Oxide Particles in Colloid

2016 ◽  
Vol 16 (11) ◽  
pp. 11364-11368 ◽  
Author(s):  
Rana Tariq Mehmood Ahmad ◽  
Seung-Ho Hong ◽  
Tian-Zi Shen ◽  
Yong-Sang Kim ◽  
Jang-Kun Song
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Oxide Particles

Preparation of a nano-MnO2 surface-modified reduced graphene oxide/PVDF flat sheet membrane for adsorptive removal of aqueous Ni(ii)

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 20542-20550 ◽  
Author(s):  
Renjie Li ◽  
Lifen Liu ◽  
Yuehua Zhang ◽  
Fenglin Yang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pvdf Membrane ◽  
Adsorptive Removal ◽  
Microwave Assisted ◽  
Flat Sheet ◽  
Reduced Graphene ◽  
Flat Sheet Membrane ◽  
Surface Modified ◽  
Sheet Membrane

In this paper, nanoscale MnO2 particles, formed from KMnO4 through microwave assisted oxidation of HI reduced graphene oxide, dispersed in PVDF membrane, adsorb and remove Ni2+ ions.

scholarly journals Electric Field Grading Material Based on Thermally Reduced Graphene Oxide

2017 ◽  
Author(s):  
W. Li ◽  
U. W Gedde ◽  
H. Hillborg
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
Electric Fields ◽  
Silicone Rubber ◽  
Rubber Matrix ◽  
Reduced Graphene ◽  
Rubber Composite ◽  
Non Linear ◽  
A Minor

<p>Silicone rubber filled with low amounts of thermally<br />reduced graphene oxide exhibit non-linear conductivity<br />with exposed to increased electric fields. Such material<br />can be interesting as electric field grading material in<br />HVDC cable accessories. In this study graphene oxide<br />was thermally reduced (rGO) at 120 and 180 °C during<br />12 hours in a hot air oven. The reduction was confirmed<br />by TGA and FTIR. 3 wt.% rGO was then dispersed in a<br />silicone rubber matrix and homogenous dispersion was<br />demonstrated by the scanning electron microscopy. The<br />rGO-filled silicone rubber (120 and 180 °C reduced)<br />exhibited a non-linear resistivity when exposed to an<br />increasing electric (DC) field. The conductivity<br />decreased from 10^14 to 10^11 Ohm m when the electric<br />field increasing from 0.2 to 6 kV/mm. The onset of the<br />non-linear conduction occurred in the range of 1 – 2<br />kV/mm. The long-term stability of the conductivity of<br />the silicone rubber composite was tested. After 47 days<br />ageing at 120 °C, therGO/silicone rubber composite<br />exhibited a slight increase in the onset of non-linear<br />conduction, as well as a minor increase in resistivity.</p>

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