Health and environmental impacts of graphene-based materials need to be thoroughly evaluated before their potential applications. Graphene has strong cytotoxicity toward bacteria. To better understand its antimicrobial mechanism, we compared the antibacterial activity of four types of graphene-based materials (graphite (Gt), graphite oxide (GtO), graphene oxide (GO), and reduced graphene oxide ...

Reduced graphene oxide (rGO) has been used as a support for piperazine to provide a heterogeneous bifunctional organocatalyst (rGO-NH) that is able to efficiently promote vintage organic transformations such as Knoevenagel, Michael and aldol reactions. The obtained results suggest a significant role of the support in the course of these reactions.

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.

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...