Using high resolution transmission electron microscopy, we identify the specific atomic scale features in chemically derived graphene monolayers that originate from the oxidation-reduction treatment of graphene. The layers are found to comprise defect-free graphene areas with sizes of a few nanometers interspersed with defect areas dominated by clustered pentagons and heptagons. Interestingly, ...

In this work, a new organic compound (K-Azo) was introduced to enhance the electrical and optical performance of graphene oxide (GO) reduced GO (rGO) nanostructured films. The improved modified chemical vapour method employed for synthesis rGO. photophysical characterization thin films performed by applying analytical techniques including X-ray diffraction, Fourier-transform infrared spectrosco...

Novel products often have a multitude of nanomaterials embedded; likewise within many graphite-based are decorated with nano-zirconium oxide (nZrO2) because graphene is an ultrahigh conductive material whereas nZrO2 for instance fire-retardant. As consequence, the pristine/isolated nanoparticle has unique beneficial properties but it no longer only compound that needs to be considered in risk a...

We demonstrate a new hydrothermal method to directly grow SnO(2) nanosheets on a graphene oxide support that is subsequently reduced to graphene. This unique SnO(2)/graphene hybrid structure exhibits enhanced lithium storage properties with high reversible capacities and good cycling performance.

A simple method is reported for the preparation of self-assembling sulfonated graphene oxide membranes (SGO-X) to be studied as a potential proton conductor exchange membrane fuel cells (PEMFCs). The effect three different sulfuric acid-to-GO molar ratios investigated, main aim being identification an optimal sulfonation interval ensuring successful trade-off among composition, structural stabi...

We report a simple, green and cost-effective approach to synthesize high-quality reduced graphene oxide/chitosan composites for determining flubendiamide. Graphene oxide was obtained by electrochemical exfoliation of pencil using DC supply system.

We show that a partially reduced graphene oxide electrocatalyst, synthesized by electrochemical reduction of graphene oxide (GO), displays significantly enhanced catalytic activity towards the oxygen reduction reaction (ORR) in alkaline solutions compared to the starting GO. The electrochemical partial reduction of GO was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. Elec...

Visible light active graphitic carbon nitride/reduced graphene oxide/silver oxide nanocomposites with a p-n heterojunction structure were synthesized by chemical deposition methods. Prepared samples were characterized by different physico-chemical technics such as XRD, FTIR, SEM, TEM and DRS. Photocatalytic activity investigated by analyzing the Acid blue 92 (AB92) concentration during the time...

We report a method to promote photoluminescence emission in graphene materials by enhancing carrier scattering instead of directly modifying band structure in multilayer reduced graphene oxide (rGO) nanospheres. We intentionally curl graphene layers to form nanospheres by reducing graphene oxide with spherical polymer templates to manipulate the carrier scattering. These nanospheres produce hot...